Public bug reported: After upgrading from 16.04 to 16.10 my courier installation wasn't working anymore.
I found out the following error messages with "systemctl status courier- mta.service": Jun 07 18:11:10 h1-df systemd[1]: [/lib/systemd/system/courier-mta.service:3] Failed to add dependency on courier-authdaemon.service,courier.service,courierfilter.service, ignoring: Invalid argument Jun 07 18:11:10 h1-df systemd[1]: [/lib/systemd/system/courier-mta.service:4] Failed to add dependency on courier-authdaemon.service,courier.service,courierfilter.service, ignoring: Invalid argument I found out that there is a syntax error at lines 3 and 4. They read: Requires=courier-authdaemon.service,courier.service,courierfilter.service After=courier-authdaemon.service,courier.service,courierfilter.service when they should read: Requires=courier-authdaemon.service courier.service courierfilter.service After=courier-authdaemon.service courier.service courierfilter.service Notice that the correct versions have spaces separating the various options in each line and not commas as the wrong one has. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: courier-mta 0.76.1-3 [modified: lib/systemd/system/courier-mta.service] ProcVersionSignature: Ubuntu 4.8.0-54.57-generic 4.8.17 Uname: Linux 4.8.0-54-generic x86_64 ApportVersion: 2.20.3-0ubuntu8.3 Architecture: amd64 Date: Wed Jun 7 18:15:48 2017 InstallationDate: Installed on 2016-05-09 (394 days ago) InstallationMedia: Ubuntu-Server 15.10 "Wily Werewolf" - Release amd64 (20151021) ProcEnviron: LANGUAGE=en_US:en TERM=screen PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: courier UpgradeStatus: Upgraded to yakkety on 2017-06-06 (1 days ago) modified.conffile..etc.courier.courierd: [modified] modified.conffile..etc.courier.esmtpd-ssl: [modified] mtime.conffile..etc.courier.courierd: 2017-06-06T09:27:57.036179 mtime.conffile..etc.courier.esmtpd-ssl: 2017-06-06T12:13:10.888307 ** Affects: courier (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug third-party-packages yakkety -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1696575 Title: courier-mta systemd service file won't load because of syntax errors in it To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/courier/+bug/1696575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs