[~]# apt-get -tetch install libsasl2-2
Reading package lists... Done
Building dependency tree... Done
The following extra packages will be installed:
  postfix
Suggested packages:
  postfix-mysql postfix-pgsql postfix-ldap postfix-pcre sasl2-bin resolvconf
  postfix-cdb
Recommended packages:
  libsasl2-modules
The following packages will be upgraded:
  libsasl2-2 postfix
2 upgraded, 0 newly installed, 0 to remove and 92 not upgraded.
2 not fully installed or removed.
Need to get 0B/1186kB of archives.
After unpacking 8192B of additional disk space will be used.
Do you want to continue [Y/n]? y
Preconfiguring packages ...
dpkg: postfix: dependency problems, but removing anyway as you request:
 at depends on mail-transport-agent; however:
  Package mail-transport-agent is not installed.
  Package postfix which provides mail-transport-agent is to be removed.
 mailx depends on exim4 | mail-transport-agent; however:
  Package exim4 is not installed.
  Package mail-transport-agent is not installed.
  Package postfix which provides mail-transport-agent is to be removed.
 mutt depends on exim4 | mail-transport-agent; however:
  Package exim4 is not installed.
  Package mail-transport-agent is not installed.
  Package postfix which provides mail-transport-agent is to be removed.
dpkg: error processing postfix (--remove):
 Package is in a very bad inconsistent state - you should
 reinstall it before attempting a removal.
Errors were encountered while processing:
 postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)