Here is the relevant section of term.log. It does say that it is removing the symlink and updating the configuration.
** Attachment added: "term.log" https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1654453/+attachment/4801260/+files/term.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1654453 Title: LMTP delivery to Dovecot stops working in 3.1.4-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1654453/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs