Bug#1019946: exim4-config_files.5.gz should mention /etc/mailname
Arthur Marsh
arthur.marsh at internode.on.net
Fri Sep 16 19:06:34 BST 2022
Package: exim4-config
Version: 4.96-4
Severity: important
Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate ***
* What led up to the situation?
Local delivery of mail for root on this machine which was aliased to my
username on this machine was instead spamming my ISP, due to
setting the mail name and hence /etc/mailname to the domain of my ISP-based
email address instead of localhost
The manual page /usr/share/man/man5/exim4-config_files.5.gz should include
and explain /etc/mailname
* What exactly did you do (or not do) that was effective (or
ineffective)?
* What was the outcome of this action?
* What outcome did you expect instead?
*** End of the template - remove these template lines ***
-- Package-specific info:
Exim version 4.96 #2 built 11-Sep-2022 11:38:26
Copyright (c) University of Cambridge, 1995 - 2018
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2022
Berkeley DB: Berkeley DB 5.3.28: (September 9, 2013)
Support for: crypteq iconv() IPv6 GnuTLS TLS_resume move_frozen_messages DANE DKIM DNSSEC Event I18N OCSP PIPECONNECT PRDR Queue_Ramp SOCKS SRS TCP_Fast_Open
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch nis nis0 passwd
Authenticators: cram_md5 external plaintext
Routers: accept dnslookup ipliteral manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore autoreply lmtp pipe smtp
Fixed never_users: 0
Configure owner: 0:0
Size of off_t: 8
Configuration file search path is /etc/exim4/exim4.conf:/var/lib/exim4/config.autogenerated
Configuration file is /var/lib/exim4/config.autogenerated
# /etc/exim4/update-exim4.conf.conf
#
# Edit this file and /etc/mailname by hand and execute update-exim4.conf
# yourself or use 'dpkg-reconfigure exim4-config'
#
# Please note that this is _not_ a dpkg-conffile and that automatic changes
# to this file might happen. The code handling this will honor your local
# changes, so this is usually fine, but will break local schemes that mess
# around with multiple versions of the file.
#
# update-exim4.conf uses this file to determine variable values to generate
# exim configuration macros for the configuration file.
#
# Most settings found in here do have corresponding questions in the
# Debconf configuration, but not all of them.
#
# This is a Debian specific file
dc_eximconfig_configtype='smarthost'
dc_other_hostnames=''
dc_local_interfaces='127.0.0.1'
dc_readhost='internode.on.net'
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost='mail.internode.on.net'
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname='true'
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
mailname:localhost
# /etc/default/exim4
EX4DEF_VERSION=''
# 'combined' - one daemon running queue and listening on SMTP port
# 'no' - no daemon running the queue
# 'separate' - two separate daemons
# 'ppp' - only run queue with /etc/ppp/ip-up.d/exim4.
# 'nodaemon' - no daemon is started at all.
# 'queueonly' - only a queue running daemon is started, no SMTP listener.
# setting this to 'no' will also disable queueruns from /etc/ppp/ip-up.d/exim4
QUEUERUNNER='combined'
# how often should we run the queue
QUEUEINTERVAL='30m'
# options common to quez-runner and listening daemon
COMMONOPTIONS=''
# more options for the daemon/process running the queue (applies to the one
# started in /etc/ppp/ip-up.d/exim4, too.
QUEUERUNNEROPTIONS=''
# special flags given to exim directly after the -q. See exim(8)
QFLAGS=''
# options for daemon listening on port 25
SMTPLISTENEROPTIONS=''
-- System Information:
Debian Release: bookworm/sid
APT prefers experimental
APT policy: (1, 'experimental')
merged-usr: no
Architecture: amd64 (x86_64)
Kernel: Linux 6.0.0-rc5+ (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
Versions of packages exim4-config depends on:
ii adduser 3.129
ii debconf [debconf-2.0] 1.5.79
Versions of packages exim4-config recommends:
ii ca-certificates 20211016
exim4-config suggests no packages.
-- Configuration Files:
/etc/email-addresses changed:
amarsh04: arthur.marsh at internode.on.net
root: arthur.marsh at internode.on.net
/etc/exim4/exim4.conf.template changed:
AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS = true
exim_path = /usr/sbin/exim4
.ifndef CONFDIR
CONFDIR = /etc/exim4
.endif
UPEX4CmacrosUPEX4C = 1
domainlist local_domains = MAIN_LOCAL_DOMAINS
domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS
hostlist relay_from_hosts = MAIN_RELAY_NETS
.ifndef MAIN_PRIMARY_HOSTNAME_AS_QUALIFY_DOMAIN
.ifndef MAIN_QUALIFY_DOMAIN
qualify_domain = ETC_MAILNAME
.else
qualify_domain = MAIN_QUALIFY_DOMAIN
.endif
.endif
.ifdef MAIN_LOCAL_INTERFACES
local_interfaces = MAIN_LOCAL_INTERFACES
.endif
.ifndef LOCAL_DELIVERY
LOCAL_DELIVERY=mail_spool
.endif
gecos_pattern = ^([^,:]*)
gecos_name = $1
.ifndef MAIN_LOG_SELECTOR
MAIN_LOG_SELECTOR = +smtp_protocol_error +smtp_syntax_error +tls_certificate_verified +tls_peerdn
.endif
.ifndef MAIN_ACL_CHECK_MAIL
MAIN_ACL_CHECK_MAIL = acl_check_mail
.endif
acl_smtp_mail = MAIN_ACL_CHECK_MAIL
.ifndef MAIN_ACL_CHECK_RCPT
MAIN_ACL_CHECK_RCPT = acl_check_rcpt
.endif
acl_smtp_rcpt = MAIN_ACL_CHECK_RCPT
.ifndef MAIN_ACL_CHECK_DATA
MAIN_ACL_CHECK_DATA = acl_check_data
.endif
acl_smtp_data = MAIN_ACL_CHECK_DATA
.ifdef MESSAGE_SIZE_LIMIT
message_size_limit = MESSAGE_SIZE_LIMIT
.endif
.ifdef MAIN_ALLOW_DOMAIN_LITERALS
allow_domain_literals
.endif
.ifndef DC_minimaldns
.ifndef MAIN_HOST_LOOKUP
MAIN_HOST_LOOKUP = *
.endif
host_lookup = MAIN_HOST_LOOKUP
.endif
dns_dnssec_ok = 1
.ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME
primary_hostname = MAIN_HARDCODE_PRIMARY_HOSTNAME
.endif
prdr_enable = true
.ifdef MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS
smtp_accept_max_nonmail_hosts = MAIN_SMTP_ACCEPT_MAX_NOMAIL_HOSTS
.endif
.ifndef MAIN_FORCE_SENDER
local_from_check = false
local_sender_retain = true
untrusted_set_sender = *
.endif
.ifndef MAIN_IGNORE_BOUNCE_ERRORS_AFTER
MAIN_IGNORE_BOUNCE_ERRORS_AFTER = 2d
.endif
ignore_bounce_errors_after = MAIN_IGNORE_BOUNCE_ERRORS_AFTER
.ifndef MAIN_TIMEOUT_FROZEN_AFTER
MAIN_TIMEOUT_FROZEN_AFTER = 7d
.endif
timeout_frozen_after = MAIN_TIMEOUT_FROZEN_AFTER
.ifndef MAIN_FREEZE_TELL
MAIN_FREEZE_TELL = postmaster
.endif
freeze_tell = MAIN_FREEZE_TELL
.ifndef SPOOLDIR
SPOOLDIR = /var/spool/exim4
.endif
spool_directory = SPOOLDIR
.ifndef MAIN_TRUSTED_USERS
MAIN_TRUSTED_USERS = uucp
.endif
trusted_users = MAIN_TRUSTED_USERS
.ifdef MAIN_TRUSTED_GROUPS
trusted_groups = MAIN_TRUSTED_GROUPS
.endif
.ifdef MAIN_KEEP_ENVIRONMENT
keep_environment = MAIN_KEEP_ENVIRONMENT
.else
keep_environment =
.endif
.ifdef MAIN_ADD_ENVIRONMENT
add_environment = MAIN_ADD_ENVIRONMENT
.endif
.ifdef _OPT_MAIN_SMTPUTF8_ADVERTISE_HOSTS
.ifndef MAIN_SMTPUTF8_ADVERTISE_HOSTS
MAIN_SMTPUTF8_ADVERTISE_HOSTS =
.endif
smtputf8_advertise_hosts = MAIN_SMTPUTF8_ADVERTISE_HOSTS
.endif
.ifdef MAIN_TLS_ENABLE
.ifndef MAIN_TLS_ADVERTISE_HOSTS
MAIN_TLS_ADVERTISE_HOSTS = *
.endif
tls_advertise_hosts = MAIN_TLS_ADVERTISE_HOSTS
.ifdef MAIN_TLS_CERTKEY
tls_certificate = MAIN_TLS_CERTKEY
.else
.ifndef MAIN_TLS_CERTIFICATE
MAIN_TLS_CERTIFICATE = CONFDIR/exim.crt
.endif
tls_certificate = MAIN_TLS_CERTIFICATE
.ifndef MAIN_TLS_PRIVATEKEY
MAIN_TLS_PRIVATEKEY = CONFDIR/exim.key
.endif
tls_privatekey = MAIN_TLS_PRIVATEKEY
.endif
.ifndef MAIN_TLS_VERIFY_CERTIFICATES
MAIN_TLS_VERIFY_CERTIFICATES = ${if exists{/etc/ssl/certs/ca-certificates.crt}\
{/etc/ssl/certs/ca-certificates.crt}\
{/dev/null}}
.endif
tls_verify_certificates = MAIN_TLS_VERIFY_CERTIFICATES
.ifdef MAIN_TLS_VERIFY_HOSTS
tls_verify_hosts = MAIN_TLS_VERIFY_HOSTS
.endif
.ifdef MAIN_TLS_TRY_VERIFY_HOSTS
tls_try_verify_hosts = MAIN_TLS_TRY_VERIFY_HOSTS
.endif
.else
.endif
.ifdef MAIN_LOG_SELECTOR
log_selector = MAIN_LOG_SELECTOR
.endif
begin acl
acl_local_deny_exceptions:
accept
hosts = ${if exists{CONFDIR/host_local_deny_exceptions}\
{CONFDIR/host_local_deny_exceptions}\
{}}
accept
senders = ${if exists{CONFDIR/sender_local_deny_exceptions}\
{CONFDIR/sender_local_deny_exceptions}\
{}}
accept
hosts = ${if exists{CONFDIR/local_host_whitelist}\
{CONFDIR/local_host_whitelist}\
{}}
accept
senders = ${if exists{CONFDIR/local_sender_whitelist}\
{CONFDIR/local_sender_whitelist}\
{}}
# This hook allows you to hook in your own ACLs without having to
# modify this file. If you do it like we suggest, you'll end up with
# a small performance penalty since there is an additional file being
# accessed. This doesn't happen if you leave the macro unset.
.ifdef LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE
.include LOCAL_DENY_EXCEPTIONS_LOCAL_ACL_FILE
.endif
# this is still supported for a transition period and is deprecated.
.ifdef WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE
.include WHITELIST_LOCAL_DENY_LOCAL_ACL_FILE
.endif
acl_check_mail:
accept
.ifndef CHECK_RCPT_LOCAL_LOCALPARTS
CHECK_RCPT_LOCAL_LOCALPARTS = ^[.] : ^.*[@%!/|`#&?]
.endif
.ifndef CHECK_RCPT_REMOTE_LOCALPARTS
CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./
.endif
acl_check_rcpt:
# Accept if the source is local SMTP (i.e. not over TCP/IP). We do this by
# testing for an empty sending host field.
accept
hosts = :
control = dkim_disable_verify
# Do not try to verify DKIM signatures of incoming mail if DC_minimaldns
# or DISABLE_DKIM_VERIFY are set.
.ifdef DC_minimaldns
warn
control = dkim_disable_verify
.else
.ifdef DISABLE_DKIM_VERIFY
warn
control = dkim_disable_verify
.endif
.endif
# The following section of the ACL is concerned with local parts that contain
# certain non-alphanumeric characters. Dots in unusual places are
# handled by this ACL as well.
#
# Non-alphanumeric characters other than dots are rarely found in genuine
# local parts, but are often tried by people looking to circumvent
# relaying restrictions. Therefore, although they are valid in local
# parts, these rules disallow certain non-alphanumeric characters, as
# a precaution.
#
# Empty components (two dots in a row) are not valid in RFC 2822, but Exim
# allows them because they have been encountered. (Consider local parts
# constructed as "firstinitial.secondinitial.familyname" when applied to
# a name without a second initial.) However, a local part starting
# with a dot or containing /../ can cause trouble if it is used as part of a
# file name (e.g. for a mailing list). This is also true for local parts that
# contain slashes. A pipe symbol can also be troublesome if the local part is
# incorporated unthinkingly into a shell command line.
#
# These ACL components will block recipient addresses that are valid
# from an RFC5322 point of view. We chose to have them blocked by
# default for security reasons.
#
# If you feel that your site should have less strict recipient
# checking, please feel free to change the default values of the macros
# defined in main/01_exim4-config_listmacrosdefs or override them from a
# local configuration file.
#
# Two different rules are used. The first one has a quite strict
# default, and is applied to messages that are addressed to one of the
# local domains handled by this host.
# The default value of CHECK_RCPT_LOCAL_LOCALPARTS is defined
# at the top of this file.
.ifdef CHECK_RCPT_LOCAL_LOCALPARTS
deny
domains = +local_domains
local_parts = CHECK_RCPT_LOCAL_LOCALPARTS
message = restricted characters in address
.endif
# The second rule applies to all other domains, and its default is
# considerably less strict.
# The default value of CHECK_RCPT_REMOTE_LOCALPARTS is defined in
# main/01_exim4-config_listmacrosdefs:
# CHECK_RCPT_REMOTE_LOCALPARTS = ^[./|] : ^.*[@%!`#&?] : ^.*/\\.\\./
# It allows local users to send outgoing messages to sites
# that use slashes and vertical bars in their local parts. It blocks
# local parts that begin with a dot, slash, or vertical bar, but allows
# these characters within the local part. However, the sequence /../ is
# barred. The use of some other non-alphanumeric characters is blocked.
# Single quotes might probably be dangerous as well, but they're
# allowed by the default regexps to avoid rejecting mails to Ireland.
# The motivation here is to prevent local users (or local users' malware)
# from mounting certain kinds of attack on remote sites.
.ifdef CHECK_RCPT_REMOTE_LOCALPARTS
deny
domains = !+local_domains
local_parts = CHECK_RCPT_REMOTE_LOCALPARTS
message = restricted characters in address
.endif
# Accept mail to postmaster in any local domain, regardless of the source,
# and without verifying the sender.
#
accept
.ifndef CHECK_RCPT_POSTMASTER
local_parts = postmaster
.else
local_parts = CHECK_RCPT_POSTMASTER
.endif
domains = +local_domains : +relay_to_domains
# Deny unless the sender address can be verified.
#
# This is disabled by default so that DNSless systems don't break. If
# your system can do DNS lookups without delay or cost, you might want
# to enable this feature.
#
# This feature does not work in smarthost and satellite setups as
# with these setups all domains pass verification. See spec.txt section
# "Access control lists" subsection "Address verification" with the added
# information that a smarthost/satellite setup routes all non-local e-mail
# to the smarthost.
.ifdef CHECK_RCPT_VERIFY_SENDER
deny
!acl = acl_local_deny_exceptions
!verify = sender
message = Sender verification failed
.endif
# Verify senders listed in local_sender_callout with a callout.
#
# In smarthost and satellite setups, this causes the callout to be
# done to the smarthost. Verification will thus only be reliable if the
# smarthost does reject illegal addresses in the SMTP dialog.
deny
!acl = acl_local_deny_exceptions
senders = ${if exists{CONFDIR/local_sender_callout}\
{CONFDIR/local_sender_callout}\
{}}
!verify = sender/callout
.ifndef CHECK_RCPT_NO_FAIL_TOO_MANY_BAD_RCPT
# Reject all RCPT commands after too many bad recipients
# This is partly a defense against spam abuse and partly attacker abuse.
# Real senders should manage, by the time they get to 10 RCPT directives,
# to have had at least half of them be real addresses.
#
# This is a lightweight check and can protect you against repeated
# invocations of more heavy-weight checks which would come after it.
deny condition = ${if and {\
{>{$rcpt_count}{10}}\
{<{$recipients_count}{${eval:$rcpt_count/2}}} }}
message = Rejected for too many bad recipients
logwrite = REJECT [$sender_host_address]: bad recipient count high [${eval:$rcpt_count-$recipients_count}]
.endif
# Accept if the message comes from one of the hosts for which we are an
# outgoing relay. It is assumed that such hosts are most likely to be MUAs,
# so we set control=submission to make Exim treat the message as a
# submission. It will fix up various errors in the message, for example, the
# lack of a Date: header line. If you are actually relaying out out from
# MTAs, you may want to disable this. If you are handling both relaying from
# MTAs and submissions from MUAs you should probably split them into two
# lists, and handle them differently.
# Recipient verification is omitted here, because in many cases the clients
# are dumb MUAs that don't cope well with SMTP error responses. If you are
# actually relaying out from MTAs, you should probably add recipient
# verification here.
# Note that, by putting this test before any DNS black list checks, you will
# always accept from these hosts, even if they end up on a black list. The
# assumption is that they are your friends, and if they get onto black
# list, it is a mistake.
accept
hosts = +relay_from_hosts
control = submission/sender_retain
control = dkim_disable_verify
# Accept if the message arrived over an authenticated connection, from
# any host. Again, these messages are usually from MUAs, so recipient
# verification is omitted, and submission mode is set. And again, we do this
# check before any black list tests.
accept
authenticated = *
control = submission/sender_retain
control = dkim_disable_verify
# Insist that any other recipient address that we accept is either in one of
# our local domains, or is in a domain for which we explicitly allow
# relaying. Any other domain is rejected as being unacceptable for relaying.
require
message = relay not permitted
domains = +local_domains : +relay_to_domains
# We also require all accepted addresses to be verifiable. This check will
# do local part verification for local domains, but only check the domain
# for remote domains.
require
verify = recipient
# Verify recipients listed in local_rcpt_callout with a callout.
# This is especially handy for forwarding MX hosts (secondary MX or
# mail hubs) of domains that receive a lot of spam to non-existent
# addresses. The only way to check local parts for remote relay
# domains is to use a callout (add /callout), but please read the
# documentation about callouts before doing this.
deny
!acl = acl_local_deny_exceptions
recipients = ${if exists{CONFDIR/local_rcpt_callout}\
{CONFDIR/local_rcpt_callout}\
{}}
!verify = recipient/callout
# CONFDIR/local_sender_blacklist holds a list of envelope senders that
# should have their access denied to the local host. Incoming messages
# with one of these senders are rejected at RCPT time.
#
# The explicit white lists are honored as well as negative items in
# the black list. See exim4-config_files(5) for details.
deny
!acl = acl_local_deny_exceptions
senders = ${if exists{CONFDIR/local_sender_blacklist}\
{CONFDIR/local_sender_blacklist}\
{}}
message = sender envelope address $sender_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster
log_message = sender envelope address is locally blacklisted.
# deny bad sites (IP address)
# CONFDIR/local_host_blacklist holds a list of host names, IP addresses
# and networks (CIDR notation) that should have their access denied to
# The local host. Messages coming in from a listed host will have all
# RCPT statements rejected.
#
# The explicit white lists are honored as well as negative items in
# the black list. See exim4-config_files(5) for details.
deny
!acl = acl_local_deny_exceptions
hosts = ${if exists{CONFDIR/local_host_blacklist}\
{CONFDIR/local_host_blacklist}\
{}}
message = sender IP address $sender_host_address is locally blacklisted here. If you think this is wrong, get in touch with postmaster
log_message = sender IP address is locally blacklisted.
# Warn if the sender host does not have valid reverse DNS.
#
# If your system can do DNS lookups without delay or cost, you might want
# to enable this.
# If sender_host_address is defined, it's a remote call. If
# sender_host_name is not defined, then reverse lookup failed. Use
# this instead of !verify = reverse_host_lookup to catch deferrals
# as well as outright failures.
.ifdef CHECK_RCPT_REVERSE_DNS
warn
condition = ${if and{{def:sender_host_address}{!def:sender_host_name}}\
{yes}{no}}
add_header = X-Host-Lookup-Failed: Reverse DNS lookup failed for $sender_host_address (${if eq{$host_lookup_failed}{1}{failed}{deferred}})
.endif
.ifdef CHECK_RCPT_SPF
.ifdef _HAVE_SPF
deny
!acl = acl_local_deny_exceptions
spf = fail
message = [SPF] $sender_host_address is not allowed to send mail from \
${if def:sender_address_domain {$sender_address_domain}{$sender_helo_name}}.
log_message = SPF check failed.
defer
!acl = acl_local_deny_exceptions
spf = temperror
message = Temporary DNS error while checking SPF record. Try again later.
warn
spf = pass:softfail:neutral:permerror
add_header = :at_start:$spf_received
.endif
.endif
# Check against classic DNS "black" lists (DNSBLs) which list
# sender IP addresses
.ifdef CHECK_RCPT_IP_DNSBLS
warn
dnslists = CHECK_RCPT_IP_DNSBLS
add_header = X-Warning: $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text)
log_message = $sender_host_address is listed at $dnslist_domain ($dnslist_value: $dnslist_text)
.endif
# Check against DNSBLs which list sender domains, with an option to locally
# whitelist certain domains that might be blacklisted.
#
# Note: If you define CHECK_RCPT_DOMAIN_DNSBLS, you must append
# "/$sender_address_domain" after each domain. For example:
# CHECK_RCPT_DOMAIN_DNSBLS = rhsbl.foo.org/$sender_address_domain \
# : rhsbl.bar.org/$sender_address_domain
.ifdef CHECK_RCPT_DOMAIN_DNSBLS
warn
!senders = ${if exists{CONFDIR/local_domain_dnsbl_whitelist}\
{CONFDIR/local_domain_dnsbl_whitelist}\
{}}
dnslists = CHECK_RCPT_DOMAIN_DNSBLS
add_header = X-Warning: $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text)
log_message = $sender_address_domain is listed at $dnslist_domain ($dnslist_value: $dnslist_text)
.endif
# This hook allows you to hook in your own ACLs without having to
# modify this file. If you do it like we suggest, you'll end up with
# a small performance penalty since there is an additional file being
# accessed. This doesn't happen if you leave the macro unset.
.ifdef CHECK_RCPT_LOCAL_ACL_FILE
.include CHECK_RCPT_LOCAL_ACL_FILE
.endif
#############################################################################
# This check is commented out because it is recognized that not every
# sysadmin will want to do it. If you enable it, the check performs
# Client SMTP Authorization (csa) checks on the sending host. These checks
# do DNS lookups for SRV records. The CSA proposal is currently (May 2005)
# an Internet draft. You can, of course, add additional conditions to this
# ACL statement to restrict the CSA checks to certain hosts only.
#
# require verify = csa
#############################################################################
# Accept if the address is in a domain for which we are an incoming relay,
# but again, only if the recipient can be verified.
accept
domains = +relay_to_domains
endpass
verify = recipient
# At this point, the address has passed all the checks that have been
# configured, so we accept it unconditionally.
accept
acl_check_data:
# Deny if the message contains an overlong line. Per the standards
# we should never receive one such via SMTP.
#
.ifndef IGNORE_SMTP_LINE_LENGTH_LIMIT
deny
condition = ${if > {$max_received_linelength}{998}}
message = maximum allowed line length is 998 octets, \
got $max_received_linelength
.endif
# Deny if the headers contain badly-formed addresses.
#
.ifndef NO_CHECK_DATA_VERIFY_HEADER_SYNTAX
deny
!acl = acl_local_deny_exceptions
!verify = header_syntax
message = header syntax
log_message = header syntax ($acl_verify_message)
.endif
# require that there is a verifiable sender address in at least
# one of the "Sender:", "Reply-To:", or "From:" header lines.
.ifdef CHECK_DATA_VERIFY_HEADER_SENDER
deny
!acl = acl_local_deny_exceptions
!verify = header_sender
message = No verifiable sender address in message headers
.endif
# Deny if the message contains malware. Before enabling this check, you
# must install a virus scanner and set the av_scanner option in the
# main configuration.
#
# exim4-daemon-heavy must be used for this section to work.
#
# deny
# malware = *
# message = This message was detected as possible malware ($malware_name).
# Add headers to a message if it is judged to be spam. Before enabling this,
# you must install SpamAssassin. You may also need to set the spamd_address
# option in the main configuration.
#
# exim4-daemon-heavy must be used for this section to work.
#
# Please note that this is only suiteable as an example. See
# /usr/share/doc/exim4-base/README.Debian.gz
#
# See the exim docs and the exim wiki for more suitable examples.
#
# # Remove internal headers
# warn
# remove_header = X-Spam_score: X-Spam_score_int : X-Spam_bar : \
# X-Spam_report
#
# warn
# condition = ${if <{$message_size}{120k}{1}{0}}
# # ":true" to add headers/acl variables even if not spam
# spam = nobody:true
# add_header = X-Spam_score: $spam_score
# add_header = X-Spam_bar: $spam_bar
# # Do not enable this unless you have shorted SpamAssassin's report
# #add_header = X-Spam_report: $spam_report
#
# Reject spam messages (score >15.0).
# This breaks mailing list and forward messages.
# deny
# condition = ${if <{$message_size}{120k}{1}{0}}
# condition = ${if >{$spam_score_int}{150}{true}{false}}
# message = Classified as spam (score $spam_score)
# This hook allows you to hook in your own ACLs without having to
# modify this file. If you do it like we suggest, you'll end up with
# a small performance penalty since there is an additional file being
# accessed. This doesn't happen if you leave the macro unset.
.ifdef CHECK_DATA_LOCAL_ACL_FILE
.include CHECK_DATA_LOCAL_ACL_FILE
.endif
# accept otherwise
accept
begin routers
.ifdef MAIN_ALLOW_DOMAIN_LITERALS
domain_literal:
debug_print = "R: domain_literal for $local_part@$domain"
driver = ipliteral
domains = ! +local_domains
transport = remote_smtp
.endif
hubbed_hosts:
debug_print = "R: hubbed_hosts for $domain"
driver = manualroute
domains = "${if exists{CONFDIR/hubbed_hosts}\
{partial-lsearch;CONFDIR/hubbed_hosts}\
fail}"
same_domain_copy_routing = yes
route_data = ${lookup{$domain}partial-lsearch{CONFDIR/hubbed_hosts}}
transport = remote_smtp
.ifdef DCconfig_internet
dnslookup_relay_to_domains:
debug_print = "R: dnslookup_relay_to_domains for $local_part@$domain"
driver = dnslookup
domains = ! +local_domains : +relay_to_domains
transport = remote_smtp
same_domain_copy_routing = yes
no_more
.ifndef ROUTER_DNSLOOKUP_IGNORE_TARGET_HOSTS
ROUTER_DNSLOOKUP_IGNORE_TARGET_HOSTS = <; 0.0.0.0 ; 127.0.0.0/8 ; 192.168.0.0/16 ; 172.16.0.0/12 ; 10.0.0.0/8 ; 169.254.0.0/16 ; 255.255.255.255 ; ::/128 ; ::1/128 ; fc00::/7 ; fe80::/10 ; 100::/64
.endif
dnslookup:
debug_print = "R: dnslookup for $local_part@$domain"
driver = dnslookup
domains = ! +local_domains
transport = remote_smtp
same_domain_copy_routing = yes
ignore_target_hosts = ROUTER_DNSLOOKUP_IGNORE_TARGET_HOSTS
no_more
.endif
.ifdef DCconfig_local
nonlocal:
debug_print = "R: nonlocal for $local_part@$domain"
driver = redirect
domains = ! +local_domains
allow_fail
data = :fail: Mailing to remote domains not supported
no_more
.endif
.ifdef DCconfig_smarthost DCconfig_satellite
smarthost:
debug_print = "R: smarthost for $local_part@$domain"
driver = manualroute
domains = ! +local_domains
transport = remote_smtp_smarthost
route_list = * DCsmarthost byname
host_find_failed = ignore
same_domain_copy_routing = yes
no_more
.endif
COND_LOCAL_SUBMITTER = "\
${if match_ip{$sender_host_address}{:@[]}\
{1}{0}\
}"
real_local:
debug_print = "R: real_local for $local_part@$domain"
driver = accept
domains = +local_domains
condition = COND_LOCAL_SUBMITTER
local_part_prefix = real-
check_local_user
transport = LOCAL_DELIVERY
system_aliases:
debug_print = "R: system_aliases for $local_part@$domain"
driver = redirect
domains = +local_domains
allow_fail
allow_defer
data = ${lookup{$local_part}lsearch{/etc/aliases}}
.ifdef SYSTEM_ALIASES_USER
user = SYSTEM_ALIASES_USER
.endif
.ifdef SYSTEM_ALIASES_GROUP
group = SYSTEM_ALIASES_GROUP
.endif
.ifdef SYSTEM_ALIASES_FILE_TRANSPORT
file_transport = SYSTEM_ALIASES_FILE_TRANSPORT
.endif
.ifdef SYSTEM_ALIASES_PIPE_TRANSPORT
pipe_transport = SYSTEM_ALIASES_PIPE_TRANSPORT
.endif
.ifdef SYSTEM_ALIASES_DIRECTORY_TRANSPORT
directory_transport = SYSTEM_ALIASES_DIRECTORY_TRANSPORT
.endif
.ifdef DCconfig_satellite
hub_user:
debug_print = "R: hub_user for $local_part@$domain"
driver = redirect
domains = +local_domains
data = ${local_part}@DCreadhost
check_local_user
hub_user_smarthost:
debug_print = "R: hub_user_smarthost for $local_part@$domain"
driver = manualroute
domains = DCreadhost
transport = remote_smtp_smarthost
route_list = * DCsmarthost byname
host_find_failed = ignore
same_domain_copy_routing = yes
check_local_user
.endif
userforward:
debug_print = "R: userforward for $local_part@$domain"
driver = redirect
domains = +local_domains
check_local_user
file = $home/.forward
require_files = $local_part_data:$home/.forward
no_verify
no_expn
check_ancestor
allow_filter
forbid_smtp_code = true
directory_transport = address_directory
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
skip_syntax_errors
syntax_errors_to = real-$local_part@$domain
syntax_errors_text = \
This is an automatically generated message. An error has\n\
been found in your .forward file. Details of the error are\n\
reported below. While this error persists, you will receive\n\
a copy of this message for every message that is addressed\n\
to you. If your .forward file is a filter file, or if it is\n\
a non-filter file containing no valid forwarding addresses,\n\
a copy of each incoming message will be put in your normal\n\
mailbox. If a non-filter file contains at least one valid\n\
forwarding address, forwarding to the valid addresses will\n\
happen, and those will be the only deliveries that occur.
procmail:
debug_print = "R: procmail for $local_part@$domain"
driver = accept
domains = +local_domains
check_local_user
transport = procmail_pipe
# emulate OR with "if exists"-expansion
require_files = ${local_part_data}:\
${if exists{/etc/procmailrc}\
{/etc/procmailrc}{${home}/.procmailrc}}:\
+/usr/bin/procmail
no_verify
no_expn
maildrop:
debug_print = "R: maildrop for $local_part@$domain"
driver = accept
domains = +local_domains
check_local_user
transport = maildrop_pipe
require_files = ${local_part_data}:${home}/.mailfilter:+/usr/bin/maildrop
no_verify
no_expn
.ifndef FIRST_USER_ACCOUNT_UID
FIRST_USER_ACCOUNT_UID = 0
.endif
.ifndef DEFAULT_SYSTEM_ACCOUNT_ALIAS
DEFAULT_SYSTEM_ACCOUNT_ALIAS = :fail: no mail to system accounts
.endif
COND_SYSTEM_USER_AND_REMOTE_SUBMITTER = "\
${if and{{! match_ip{$sender_host_address}{:@[]}}\
{<{$local_user_uid}{FIRST_USER_ACCOUNT_UID}}}\
{1}{0}\
}"
lowuid_aliases:
debug_print = "R: lowuid_aliases for $local_part@$domain (UID $local_user_uid)"
check_local_user
driver = redirect
allow_fail
domains = +local_domains
condition = COND_SYSTEM_USER_AND_REMOTE_SUBMITTER
data = ${if exists{CONFDIR/lowuid-aliases}\
{${lookup{$local_part}lsearch{CONFDIR/lowuid-aliases}\
{$value}{DEFAULT_SYSTEM_ACCOUNT_ALIAS}}}\
{DEFAULT_SYSTEM_ACCOUNT_ALIAS}}
local_user:
debug_print = "R: local_user for $local_part@$domain"
driver = accept
domains = +local_domains
check_local_user
local_parts = ! root
transport = LOCAL_DELIVERY
cannot_route_message = Unknown user
mail4root:
debug_print = "R: mail4root for $local_part@$domain"
driver = redirect
domains = +local_domains
data = /var/mail/mail
file_transport = address_file
local_parts = root
user = mail
group = mail
begin transports
.ifdef HIDE_MAILNAME
REMOTE_SMTP_HEADERS_REWRITE=*@+local_domains $1 at DCreadhost frs : *@ETC_MAILNAME $1 at DCreadhost frs
REMOTE_SMTP_RETURN_PATH=${if match_domain{$sender_address_domain}{+local_domains}{${sender_address_local_part}@DCreadhost}{${if match_domain{$sender_address_domain}{ETC_MAILNAME}{${sender_address_local_part}@DCreadhost}fail}}}
.endif
.ifdef REMOTE_SMTP_HELO_FROM_DNS
.ifdef REMOTE_SMTP_HELO_DATA
REMOTE_SMTP_HELO_DATA==${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}}
.else
REMOTE_SMTP_HELO_DATA=${lookup dnsdb {ptr=$sending_ip_address}{$value}{$primary_hostname}}
.endif
.endif
.ifndef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS = *
.endif
address_file:
debug_print = "T: address_file for $local_part@$domain"
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
address_pipe:
debug_print = "T: address_pipe for $local_part@$domain"
driver = pipe
return_fail_output
address_reply:
debug_print = "T: autoreply for $local_part@$domain"
driver = autoreply
mail_spool:
debug_print = "T: appendfile for $local_part@$domain"
driver = appendfile
file = /var/mail/$local_part_data
delivery_date_add
envelope_to_add
return_path_add
group = mail
mode = 0660
mode_fail_narrower = false
maildir_home:
debug_print = "T: maildir_home for $local_part@$domain"
driver = appendfile
.ifdef MAILDIR_HOME_MAILDIR_LOCATION
directory = MAILDIR_HOME_MAILDIR_LOCATION
.else
directory = $home/Maildir
.endif
.ifdef MAILDIR_HOME_CREATE_DIRECTORY
create_directory
.endif
.ifdef MAILDIR_HOME_CREATE_FILE
create_file = MAILDIR_HOME_CREATE_FILE
.endif
delivery_date_add
envelope_to_add
return_path_add
maildir_format
.ifdef MAILDIR_HOME_DIRECTORY_MODE
directory_mode = MAILDIR_HOME_DIRECTORY_MODE
.else
directory_mode = 0700
.endif
.ifdef MAILDIR_HOME_MODE
mode = MAILDIR_HOME_MODE
.else
mode = 0600
.endif
mode_fail_narrower = false
# This transport always chdirs to $home before trying to deliver. If
# $home is not accessible, this chdir fails and prevents delivery.
# If you are in a setup where home directories might not be
# accessible, uncomment the current_directory line below.
# current_directory = /
maildrop_pipe:
debug_print = "T: maildrop_pipe for $local_part@$domain"
driver = pipe
path = "/bin:/usr/bin:/usr/local/bin"
command = "/usr/bin/maildrop"
message_prefix =
message_suffix =
return_path_add
delivery_date_add
envelope_to_add
procmail_pipe:
debug_print = "T: procmail_pipe for $local_part@$domain"
driver = pipe
path = "/bin:/usr/bin:/usr/local/bin"
command = "/usr/bin/procmail"
return_path_add
delivery_date_add
envelope_to_add
remote_smtp:
debug_print = "T: remote_smtp for $local_part@$domain"
driver = smtp
.ifdef REMOTE_SMTP_HOSTS_AVOID_TLS
hosts_avoid_tls = REMOTE_SMTP_HOSTS_AVOID_TLS
.endif
.ifdef REMOTE_SMTP_HEADERS_REWRITE
headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
.endif
.ifdef REMOTE_SMTP_RETURN_PATH
return_path = REMOTE_SMTP_RETURN_PATH
.endif
.ifdef REMOTE_SMTP_HELO_DATA
helo_data=REMOTE_SMTP_HELO_DATA
.endif
.ifdef REMOTE_SMTP_INTERFACE
interface = REMOTE_SMTP_INTERFACE
.endif
.ifdef DKIM_DOMAIN
dkim_domain = DKIM_DOMAIN
.endif
.ifdef DKIM_IDENTITY
dkim_identity = DKIM_IDENTITY
.endif
.ifdef DKIM_SELECTOR
dkim_selector = DKIM_SELECTOR
.endif
.ifdef DKIM_PRIVATE_KEY
dkim_private_key = DKIM_PRIVATE_KEY
.endif
.ifdef DKIM_CANON
dkim_canon = DKIM_CANON
.endif
.ifdef DKIM_STRICT
dkim_strict = DKIM_STRICT
.endif
.ifdef DKIM_SIGN_HEADERS
dkim_sign_headers = DKIM_SIGN_HEADERS
.endif
.ifdef DKIM_TIMESTAMPS
dkim_timestamps = DKIM_TIMESTAMPS
.endif
.ifdef TLS_DH_MIN_BITS
tls_dh_min_bits = TLS_DH_MIN_BITS
.endif
.ifdef REMOTE_SMTP_TLS_CERTIFICATE
tls_certificate = REMOTE_SMTP_TLS_CERTIFICATE
.endif
.ifdef REMOTE_SMTP_PRIVATEKEY
tls_privatekey = REMOTE_SMTP_PRIVATEKEY
.endif
.ifdef REMOTE_SMTP_HOSTS_REQUIRE_TLS
hosts_require_tls = REMOTE_SMTP_HOSTS_REQUIRE_TLS
.endif
.ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
.endif
remote_smtp_smarthost:
debug_print = "T: remote_smtp_smarthost for $local_part@$domain"
driver = smtp
multi_domain
hosts_try_auth = <; ${if exists{CONFDIR/passwd.client} \
{\
${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$host_address}}\
}\
{} \
}
.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
hosts_avoid_tls = REMOTE_SMTP_SMARTHOST_HOSTS_AVOID_TLS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
hosts_require_tls = REMOTE_SMTP_SMARTHOST_HOSTS_REQUIRE_TLS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
tls_verify_certificates = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_CERTIFICATES
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
tls_verify_hosts = REMOTE_SMTP_SMARTHOST_TLS_VERIFY_HOSTS
.endif
.ifdef REMOTE_SMTP_HEADERS_REWRITE
headers_rewrite = REMOTE_SMTP_HEADERS_REWRITE
.endif
.ifdef REMOTE_SMTP_RETURN_PATH
return_path = REMOTE_SMTP_RETURN_PATH
.endif
.ifdef REMOTE_SMTP_HELO_DATA
helo_data=REMOTE_SMTP_HELO_DATA
.endif
.ifdef TLS_DH_MIN_BITS
tls_dh_min_bits = TLS_DH_MIN_BITS
.endif
.ifdef REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
tls_certificate = REMOTE_SMTP_SMARTHOST_TLS_CERTIFICATE
.endif
.ifdef REMOTE_SMTP_SMARTHOST_PRIVATEKEY
tls_privatekey = REMOTE_SMTP_SMARTHOST_PRIVATEKEY
.endif
.ifdef REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
headers_remove = REMOTE_SMTP_TRANSPORTS_HEADERS_REMOVE
.endif
.ifdef REMOTE_SMTP_SMARTHOST_PROTOCOL
protocol = REMOTE_SMTP_SMARTHOST_PROTOCOL
.endif
address_directory:
debug_print = "T: address_directory for $local_part@$domain"
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
check_string = ""
escape_string = ""
maildir_format
begin retry
* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
begin rewrite
.ifndef NO_EAA_REWRITE_REWRITE
*@+local_domains "${lookup{${local_part}}lsearch{/etc/email-addresses}\
{$value}fail}" Ffrs
*@ETC_MAILNAME "${lookup{${local_part}}lsearch{/etc/email-addresses}\
{$value}fail}" Ffrs
.endif
begin authenticators
cram_md5:
driver = cram_md5
public_name = CRAM-MD5
client_name = ${extract{1}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}}
client_secret = ${extract{2}{:}{${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}}}
PASSWDLINE=${sg{\
${lookup{$host}nwildlsearch{CONFDIR/passwd.client}{$value}fail}\
}\
{\\N[\\^]\\N}\
{^^}\
}
plain:
driver = plaintext
public_name = PLAIN
.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS
client_send = "<; ${if !eq{$tls_out_cipher}{}\
{^${extract{1}{:}{PASSWDLINE}}\
^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}\
}fail}"
.else
client_send = "<; ^${extract{1}{:}{PASSWDLINE}}\
^${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}"
.endif
login:
driver = plaintext
public_name = LOGIN
.ifndef AUTH_CLIENT_ALLOW_NOTLS_PASSWORDS
# Return empty string if not non-TLS AND looking up $host in passwd-file
# yields a non-empty string; fail otherwise.
client_send = "<; ${if and{\
{!eq{$tls_out_cipher}{}}\
{!eq{PASSWDLINE}{}}\
}\
{}fail}\
; ${extract{1}{::}{PASSWDLINE}}\
; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}"
.else
# Return empty string if looking up $host in passwd-file yields a
# non-empty string; fail otherwise.
client_send = "<; ${if !eq{PASSWDLINE}{}\
{}fail}\
; ${extract{1}{::}{PASSWDLINE}}\
; ${sg{PASSWDLINE}{\\N([^:]+:)(.*)\\N}{\\$2}}"
.endif
/etc/exim4/passwd.client [Errno 13] Permission denied: '/etc/exim4/passwd.client'
-- debconf information:
* exim4/dc_relay_nets:
exim4/exim4-config-title:
* exim4/dc_other_hostnames:
* exim4/dc_local_interfaces: 127.0.0.1
* exim4/dc_smarthost: mail.internode.on.net
* exim4/dc_minimaldns: false
* exim4/dc_localdelivery: mbox format in /var/mail/
* exim4/use_split_config: false
exim4/no_config: true
exim4/dc_postmaster: amarsh04
* exim4/mailname: localhost
exim4/dc_relay_domains:
* exim4/dc_eximconfig_configtype: mail sent by smarthost; received via SMTP or fetchmail
* exim4/dc_readhost: internode.on.net
* exim4/hide_mailname: true
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