On Mon, 2013-01-14 at 16:16 +0100, Daniel Parthey wrote: > Jan 12 16:48:35 10.129.3.233 dovecot: mailbox: mail: > imap(us...@example.org): <TaljVxnT4gAKgQPp>: Error: Cached message > size larger than expected (5194 > 4399)
I wonder if this patch causes your lmtp/lda processes to start assert-crashing (which at least with lmtp causes MTA to retry, with lda might reject mail depending on config): http://hg.dovecot.org/dovecot-2.1/rev/2b76d357a56a Since the bug appears to be in the mail delivery part, it would be much easier to debug&fix it by looking at what goes wrong there.