package:postfix:3.4.13-0ubuntu1.2
Preparing to unpack .../04-postfix_3.6.4-1ubuntu1_amd64.deb ...
/etc/postfix/main.cf.proto modified, not updating.
/etc/postfix/master.cf.proto modified, not updating.
grep: /etc/postfix/master.cf: No such file or directory
grep: /etc/postfix/master.cf: No such file or directory
/var/lib/dpkg/tmp.ci/preinst: 175: retry_warning: not found
dpkg: error processing archive /tmp/apt-dpkg-install-fsuCF5/04-postfix_3.6.4-1ubuntu1_amd64.deb (--unpack):
 new postfix package pre-installation script subprocess returned error exit status 127