Date: Wed, 8 Mar 2006 19:11:19 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Nathan Vidican <nvidican@wmptl.com> Cc: questions@freebsd.org Subject: Re: Sendmail / alias issue Message-ID: <20060308171118.GB27158@flame.pc> In-Reply-To: <440F0E8D.8060304@wmptl.com> References: <440F033A.2070400@wmptl.com> <20060308164224.GA88086@flame.pc> <440F0E8D.8060304@wmptl.com>
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On 2006-03-08 12:04, Nathan Vidican <nvidican@wmptl.com> wrote: >Giorgos Keramidas wrote: >>> So, to the question part... how can I setup an alias to either >>> ignore the bounce-back it gets, (ie to blindly send the bounce >>> itself), or is it possible to specify a different from address on >>> our server's end so when/if the other receiving server doesn't have >>> a valid from address it just drops the reply on our end, like so: >> >> >>I prefer using a different error code that is not a "permanent error". >> >>A "transient error" forces the SMTP relay of the spammers to keep the >>message for some period in their queue and try again later. There's no >>need for you to keep the message in your own mail queue :) > > True, but eventually it will fail from their queue as well and return the > message - the key question there I guess then is if the message returns to > us or to their postmaster then? Their postmaster, AFAIK. > Also, any suggestions as to the 'proper' transient error code? A 451 will > force a retry/wait condition will it not? Well, 4.2.2 and 4.4.5 are also nice: [ http://www.ietf.org/rfc/rfc1893.txt ] X.2.2 Mailbox full The mailbox is full because the user has exceeded a per-mailbox administrative quota or physical capacity. The general semantics implies that the recipient can delete messages to make more space available. This code should be used as a persistent transient failure. X.4.5 Mail system congestion The mail system was unable to deliver the message because the mail system was congested. This is useful only as a persistent transient error.
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