IMAP server issues – all users

Status (by brong at Tue Nov 29 19:10 UTC)
A bug fix to a very old bug broke some databases.

We’re reverting the bug fix now, and restarting all servers.

Technical details for those who care: it was due to signed ‘char’ comparisons on messageids and 8 bit characters being present in some messageids, which they shouldn’t

Update (by robm at Tue Nov 29 22:20 UTC)
The visible effect of this bug for users would have been:

  1. Some messages would have been delivered multiple times
  2. Pop Links would have been reporting delivery failures

The bug has been fixed.

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