From: Adrian von Bidder (avbidderfortytwo.ch)
Date: Wed Jul 27 2005 - 02:02:16 CDT

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On Tuesday 26 July 2005 23.34, Magnus Bäck wrote:
> On Tuesday, July 26, 2005 at 23:29 CEST,
>
> Christian Joergensen <mailrazor.dk> wrote:
> > On Tue, 2005-07-26 at 18:21 -0300, Marcos Mendonça wrote:
> > > Anyother way i could add the info i want to the sendmail log?

Is encoding some tagging info in the envelope sender out of the question?
Use <sender+encodedthingyyour.domain> or something like that. Base32 is
your friend for putting arbitrary encoded MPEG videos or whatever in
'encodedthingy'.

> > What about using another approach and deliver the mail with smtp to
> > localhost? Then you will get the queue-id to do your matching in the
> > mail.log.
>
> That's another way, but it is not without drawbacks:
>
> * Postfix must be running. If the application attempts to send a
> message during one of the short periods where Postfix is down (a
> restart or similar) the application must deal with that in a
> graceful manner.

IIRC, using sendmail -bs to start the smtp session instead of connecting to
localhost gets rid of that requirement.

> * Unless the system is seriously hosed, messages submitted with
> sendmail(1) are always accepted. If there is a problem, the message
> is bounced. This is very convenient for automated systems that send
> mail without user supervision. SMTP submissions puts much higher
> requirements on the application and its SMTP client.

OTOH a 'stop and fail on first error' kind of error handling is not *that*
hard to implement. Yet an SMTP dialog is more complex than just calling
sendmail, that's true.

cheers
-- vbi

--
Powerpoint: das Viagra für Manager.
        -- Detlef Borchert, NZZ, 22.7.2005

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