Mark,
It would be helpful if you could file a bug on settings that were reset during upgrade, including the zmsetup.log. The zimbraFeatureBriefcase being reset sounds like a bug, I couldn't find anywhere that we set/reset the postfix settings and main.cf should be preserved across upgrades so please include zmsetup.log so we see if they were set during the upgrade.
For the postfix_header_checks, you'll just need to replace the colon after Content-Type: with something that will match in pcre like .* and the postmap will be much happier. |