At Wed, 21 Sep 2005 12:53:46 +0200, Patrice wrote: > > I think I haven't explained it well :-) > > I want to check quota for incoming mails and reject emails if quota is over. > > I already use this script for sending 'quota exceeded' to my users >
What I do is run a script (attached) from cron at least every 30 minutes
that creates an "alias" file which uses a special "error" address which
causes my mailer to reject the recipient, with the given error message,
at SMTP time.
This technique works with Smail (which I use), and probably with minor
adaptation with Exim, and maybe Postfix as well; though of course the
specific format of the alias file will no doubt differ for those other
mailers.
As others have said already you could also use LMTP, but that would mean
opening an LMTP connection (or re-using a cached connection) for every
incoming SMTP transaction (which specified any locally deliverable
recipient) so that the recipient could be verified.
--
Greg A. Woods
H:+1 416 218-0098 W:+1 416 489-5852 x122 VE3TCP RoboHack <[EMAIL PROTECTED]>
Planix, Inc. <[EMAIL PROTECTED]> Secrets of the Weird <[EMAIL
PROTECTED]>
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