Refuse over quota mail

[Ken Murchison]

Adi Linden wrote:
>>>How can I configure cyrus-imapd to refuse over quota mail instead of 
>>>having sendmail generate a bounce message. Is this possible?
>>
>>Enable lmtp_over_quota_perm_failure in imapd.conf
> 
> 
> I did that. Now it no longer queues over quota messages but generates a 
> bounce message to the sender that message delivery failed. For the most 
> part these messages are spam with nonexistant senders. This means the 
> bounces still clog the spool.
> 
> What I would have liked seen is sendmail refusing the message during the 
> conversation with the sending MTA, therefore eliminating the need for a 
> bounce message. I realized that this is probably not possible because the 
> over quota conditioned isn't recognized until sendmail received the 
> complete message.

Use the Sendmail socket daemon (smmapd) which comes with Cyrus.  You'll 
need either Sendmail 8.13 or the patch for 8.12 
(http://www.sendmail.org/~ca/email/smenhanced.html)

This will check for over quota at RCPT TO time and send back a failure 
within the SMTP session.

-- 
Kenneth Murchison     Oceana Matrix Ltd.
Software Engineer     21 Princeton Place
716-662-8973 x26      Orchard Park, NY 14127
--PGP Public Key--    http://www.oceana.com/~ken/ksm.pgp
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