[Dovecot] lmtp sometimes fails to deliver a message to all recipients

[Artur Zaprzała]

Timo Sirainen wrote:
> On 2.4.2012, at 18.45, Artur Zaprzała wrote:
>
>> Running strace on lmtp reveals that when lmtp delivers a message to multiple recipients it saves the message to a file in the first mailbox and hard links that file to other mailboxes. But when in the meantime of delivery that file is deleted, lmtp fails to deliver the message to remaining mailboxes. For example a message for 46 recipients is delivered by lmtp to the first 12 only (fortunately postfix retries delivery for remaining recipients) and for the rest lmtp logs the following error messages:
>>
>> lmtp(3344, foo at domain): Error: RU1WMnueeU9QDQABxjIODQ: sieve: msgid=unspecified: failed to store into mailbox 'INBOX': Message was expunged (guid)
>> lmtp(3344, foo at domain): Error: RU1WMnueeU9QDQABxjIODQ: sieve: script /vmail/domain/foo/.dovecot.sieve failed with unsuccessful implicit keep (user logfile /vmail/domain/foo/.dovecot.sieve.log may reveal additional details)
> Fixed in hg.
>
Tested with Maildir. Works great. Thanks.

The above problem was appearing when some recipients (including first one) had a 
sieve filter with discard action for current message. In this case, depending on 
the pattern of recipients having a sieve discard action, lmtp can create more 
than one instance of the message for a few dozen recipients. It would be nice if 
lmtp could create a single hardlinked instance of the message even in this case.


Best regards,
Artur Zaprzała