I have managed to get around this problem. It appears to be due to the presence/non-presence of some directories and files.
I made sure the following were present: /var/run/dovecot/login /var/run/dovecot/login /etc/dovecot/dovecot.conf I was then able to reinstall dovecot-common There is a bug 255367 which has this information in it. There was also another problem when tring to start dovecot. Warning: mail_extra_groups setting was often used insecurely so it is now deprecated, use mail_access_groups or mail_privileged_group instead This can be fixed by editing /etc/dovecot.conf change the line: mail_extra_groups = mail to: mail_access_groups = mail I found this information at http://www.rasyid.net/2008/03/11/upgrade-dovecot-1010-to-1013/ ** Changed in: dovecot (Ubuntu) Status: Incomplete => Confirmed -- package dovecot-common 1:1.0.10-1ubuntu5.1 failed to install/upgrade: subprocess post-installation script returned error exit status 1 https://bugs.launchpad.net/bugs/239752 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to dovecot in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs