This is a pretty old bug, but it looks like it's still present in precise (postfix 2.9.1-4).
Looking at the postinst script, I think the fix is pretty trivial - setting the changed flag for postfix/protocols in fset_all_changed(). I'm attaching a patch that should take care of this. ** Patch added: "postfix_protocols_preseed.patch" https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/583216/+attachment/3125525/+files/postfix_protocols_preseed.patch -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/583216 Title: inet_protocols can't be preseeded To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/583216/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs