This is specifically caused by having non-default smtp_recipient_restrictions, which changed behavior in 2.10, and postfix needs to know how you want to proceed. The answer to the question can be preseeded if you so desire. There is no bug here.
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to postfix in Ubuntu. https://bugs.launchpad.net/bugs/1169044 Title: can't install/upgrade postfix non interactively through apt To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1169044/+subscriptions -- 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