<<< Date Index >>>     <<< Thread Index >>>

Re: IMAP warning: "Mailbox was externally modified. Flags may be wrong" after IMAP server upgrade



On Wed, Aug 18, 2010 at 05:30:07PM +0200, Joost Kremers wrote:
http://wwwuser.gwdg.de/~jkremer/muttdebug.txt

The warning appears twice in the output, searching for "externally modified"
finds it.

The IMAP server is violating RFC3501 for the CLOSE command by sending EXPUNGE reponses for \Deleted messages. According to the RFC (Section 6.4.2):

      The CLOSE command permanently removes all messages that have the
      \Deleted flag set from the currently selected mailbox, and returns
      to the authenticated state from the selected state.  No untagged
      EXPUNGE responses are sent.

What this looks like to Mutt is that some other mail client has deleted messages, just as if you had two mail clients attached to the same mailbox.

me