Bug#941804: exim4: remote_smtp_smarthost transport does not set DKIM variables

[Mike Crowe]

Package: exim4
Version: 4.92-8+deb10u3
Severity: wishlist

The remote_smtp transport in
/etc/exim4/conf.d/transport/30_exim4-config_remote_smtp contains lines
like:

 .ifdef DKIM_PRIVATE_KEY
 dkim_private_key = DKIM_PRIVATE_KEY
 .endif

to set the DKIM variables based on macro values. These lines are not
present in the remote_smtp_smarthost transport in
/etc/exim4/conf.d/transport/30_exim4-config_remote_smtp_smarthost, which
stops DKIM from working when using a smart host.

I've copied and pasted the DKIM lines from remote_smtp to
remote_smtp_smarthost as recommended at
https://warlord0blog.wordpress.com/2016/10/13/exim4-dkim-smarthost/ which
seemed to make DKIM work for me when using a smart host.

Please can you include these lines in the shipped configuration?

Mike.

-- Package-specific info:
Exim version 4.92 #3 built 27-Sep-2019 16:09:35
Copyright (c) University of Cambridge, 1995 - 2018
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2018
Berkeley DB: Berkeley DB 5.3.28: (September  9, 2013)
Support for: crypteq iconv() IPv6 PAM Perl Expand_dlfunc GnuTLS move_frozen_messages Content_Scanning DANE DKIM DNSSEC Event OCSP PRDR PROXY SOCKS TCP_Fast_Open
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch ldap ldapdn ldapm mysql nis nis0 passwd pgsql sqlite
Authenticators: cram_md5 cyrus_sasl dovecot plaintext spa tls
Routers: accept dnslookup ipliteral iplookup manualroute queryprogram redirect
Transports: appendfile/maildir/mailstore/mbx autoreply lmtp pipe smtp
Malware: f-protd f-prot6d drweb fsecure sophie clamd avast sock cmdline
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

-- System Information:
Debian Release: 10.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-6-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]  1.5.71
ii  exim4-base             4.92-8+deb10u3
ii  exim4-daemon-heavy     4.92-8+deb10u3

exim4 recommends no packages.

exim4 suggests no packages.

-- debconf information:
  exim4/drec: