sudo apt-get --purge remove exim4
Reading package lists... Done
Building dependency tree... Done
Package exim4 is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 61 not upgraded.
3 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up exim4-config (4.63-17) ...
2007-06-25 21:42:20 Exim configuration error in line 582 of /var/lib/exim4/config.autogenerated.tmp:
  user mail was not found
2007-06-25 21:42:20 Exim configuration error in line 582 of /var/lib/exim4/config.autogenerated.tmp:
  user mail was not found
2007-06-25 21:42:20 Exim configuration error in line 582 of /var/lib/exim4/config.autogenerated.tmp:
  user mail was not found
exim: could not open panic log - aborting: see message(s) above
Invalid new configfile /var/lib/exim4/config.autogenerated.tmp
not installing /var/lib/exim4/config.autogenerated.tmp to
/var/lib/exim4/config.autogenerated
dpkg: error processing exim4-config (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of exim4-base:
 exim4-base depends on exim4-config (>= 4.30) | exim4-config-2; however:
  Package exim4-config is not configured yet.
  Package exim4-config-2 is not installed.
  Package exim4-config which provides exim4-config-2 is not configured yet.
dpkg: error processing exim4-base (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of exim4-daemon-light:
 exim4-daemon-light depends on exim4-base (>= 4.63); however:
  Package exim4-base is not configured yet.
dpkg: error processing exim4-daemon-light (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 exim4-config
 exim4-base
 exim4-daemon-light
E: Sub-process /usr/bin/dpkg returned an error code (1)