Description of problem: IMAP clients show few, if any, incoming emails after upgrade. Version-Release number of selected component (if applicable): cyrus-imapd-3.0.1-7.fc26.x86_64 How reproducible: It's erratic. Some get through, some don't. Steps to Reproduce: 1. Do DNF upgrade from F25 to F26 of mail server with postfix + cyrus-imapd Pursuant to: https://cyrusimap.org/imap/download/upgrade.html#reconstruct-databases-and-cache ... doing "reconstruct -V max" fixed my issue (at least it made all the missing emails appear in my inbox). I don't know if it's practical to add this to an installation scriptlet or not. I have a comparatively small database. Maybe schedule a reconstruction after first boot?
It's simply not reasonable to run this on package upgrade. After all, as the Cyrus documentation itself says, this could take hours or even days and I have no idea what would happen if you rebooted your machine in the middle of it (which is something you might do if the process was silently going on in the background). No, this is simply an issue for the release notes. I thought I had already asked for some to be added, but in any case I don't think they have been composed yet. I suppose I could add a file somewhere in the package which includes an additional reference to the upgrade instructions, but it would simply be redundant with the Fedora release notes and the existing Cyrus documentation.