I broke it
OK, I admit it … I broke the email server. We are recieving email just fine, but it does not seem to be sending email at all … even from localhost, which is a bit scary. I’ll be making some backups of all our email in the morning (not that it is at risk) just in case I screw something up royally while trying to get it to work. I still have my main config files from before the upgrade, so I might be able to drop back to the last working state if it looks like it will be a while. Stay tuned for more information.