Bug#860317: upgrade to latest stretch version breaks

[Brent S. Elmer]

Package: exim4
Version: 4.89-1
Severity: normal

I upgraded packages in stretch and there was a problem upgrading exim4.  When I
try to do a reinstall of exim4 to try to fix it using synaptic, I get:

E: Internal Error, No file name for exim4:amd64

When I upgrade or reinstall any other random package, configuration of exim4
gives errors:

(Reading database ... 666472 files and directories currently installed.)
Preparing to unpack .../anacron_2.3-23_amd64.deb ...
Unpacking anacron (2.3-23) over (2.3-23) ...
Processing triggers for systemd (232-22) ...
Processing triggers for man-db (2.7.6.1-2) ...
Setting up exim4-daemon-light (4.89-1) ...
Job for exim4.service failed because of unavailable resources or another system
error.
See "systemctl status exim4.service" and "journalctl -xe" for details.
invoke-rc.d: initscript exim4, action "start" failed.
● exim4.service - LSB: exim Mail Transport Agent
   Loaded: loaded (/etc/init.d/exim4; generated; vendor preset: enabled)
   Active: failed (Result: resources) since Fri 2017-04-14 08:30:06 CDT; 5ms
ago
     Docs: man:systemd-sysv-generator(8)
  Process: 27992 ExecStart=/etc/init.d/exim4 start (code=exited,
status=0/SUCCESS)
      CPU: 145ms

Apr 14 08:30:06 brente systemd[1]: Starting LSB: exim Mail Transport Agent...
Apr 14 08:30:06 brente exim4[27992]: Starting MTA: exim4.
Apr 14 08:30:06 brente exim4[27992]: ALERT: exim paniclog
/var/log/exim4/pa…oken
Apr 14 08:30:06 brente systemd[1]: exim4.service: PID file
/run/exim4/exim.…tory
Apr 14 08:30:06 brente systemd[1]: exim4.service: Daemon never wrote its
PI…ing.
Apr 14 08:30:06 brente systemd[1]: Failed to start LSB: exim Mail
Transport…ent.
Apr 14 08:30:06 brente systemd[1]: exim4.service: Unit entered failed state.
Apr 14 08:30:06 brente systemd[1]: exim4.service: Failed with result
'resou…es'.
Hint: Some lines were ellipsized, use -l to show in full.
dpkg: error processing package exim4-daemon-light (--configure):
 subprocess installed post-installation script returned error exit status 1
Setting up anacron (2.3-23) ...
insserv: warning: script 'K01vpnagentd_init' missing LSB tags and overrides
insserv: warning: script 'vpnagentd_init' missing LSB tags and overrides
dpkg: dependency problems prevent configuration of exim4:
 exim4 depends on exim4-daemon-light | exim4-daemon-heavy | exim4-daemon-
custom; however:
  Package exim4-daemon-light is not configured yet.
  Package exim4-daemon-heavy is not installed.
  Package exim4-daemon-custom is not installed.

dpkg: error processing package exim4 (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 exim4-daemon-light
 exim4

Not all changes and updates succeeded. For further details of the failure,
please expand the 'Details' panel below.





-- Package-specific info:
Exim version 4.89 #2 built 09-Mar-2017 16:49:47
Copyright (c) University of Cambridge, 1995 - 2017
(c) The Exim Maintainers and contributors in ACKNOWLEDGMENTS file, 2007 - 2017
Berkeley DB: Berkeley DB 5.3.28: (September  9, 2013)
Support for: crypteq iconv() IPv6 GnuTLS move_frozen_messages DKIM DNSSEC Event OCSP PRDR SOCKS TCP_Fast_Open
Lookups (built-in): lsearch wildlsearch nwildlsearch iplsearch cdb dbm dbmjz dbmnz dnsdb dsearch nis nis0 passwd
Authenticators: cram_md5 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 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='local'
dc_other_hostnames='localhost.localdomain'
dc_local_interfaces='127.0.0.1 ; ::1'
dc_readhost=''
dc_relay_domains=''
dc_minimaldns='false'
dc_relay_nets=''
dc_smarthost=''
CFILEMODE='644'
dc_use_split_config='false'
dc_hide_mailname=''
dc_mailname_in_oh='true'
dc_localdelivery='mail_spool'
mailname:localhost.localdomain

-- System Information:
Debian Release: 9.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.9.2.170124 (SMP w/8 CPU cores; PREEMPT)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]  1.5.60
ii  exim4-base             4.89-1
ih  exim4-daemon-light     4.89-1

exim4 recommends no packages.

exim4 suggests no packages.

-- debconf information:
  exim4/drec: