Re: [EXIM] Error 503 Sender already specified

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Auteur: Philip Hazel
Date:  
À: Anand Buddhdev
CC: Ben Parker, exim-users
Sujet: Re: [EXIM] Error 503 Sender already specified
On Fri, 16 Apr 1999, Anand Buddhdev wrote:

> On Fri, Apr 16, 1999 at 10:08:55AM -0300, Ben Parker wrote:
>
> Create a router, called say, no_batch_smtp, and set the the batch_max
> parameter of the SMTP transport in it to 1. Give this router a list of
> domains, using the "domains" generic option, which it should process,
> and place it before the default SMTP router. See section 19 and 20 of the
> exim manual for fine-tuning.


... and having done that, complain to the postmaster at the failing
domains that their mailers are not RFC 821 compliant. This problem
usually arises because some broken MTAs do not accept more than one
message on a connection without a RSET command in between them. This is
contrary to the RFC. RSET is needed only if there is some kind of
failure in an SMTP transaction. To stick it in every time is wasteful,
as it requires an extra interaction between client and server.

-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.



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