Errors were encountered while processing:
 postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up postfix (2.8.5-2~build1) ...
postconf: panic: inet_proto: bad inet_proto_mask 0x0
Use of uninitialized value $mynetworks in scalar chomp at /var/lib/dpkg/info/postfix.config line 285.
Use of uninitialized value $_[1] in join or string at /usr/share/perl5/Debconf/Client/ConfModule.pm line 121.
setting inet_protocols:

Postfix is now set up with the changes above.  If you need to make changes, edit
/etc/postfix/main.cf (and others) as needed.  To view Postfix configuration
values, see postconf(1).

After modifying main.cf, be sure to run '/etc/init.d/postfix reload'.

Running newaliases
newaliases: fatal: bad string length 0 < 1: inet_protocols =
dpkg: error processing postfix (--configure):
 subprocess installed post-installation script returned error exit status 75
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
 postfix