[exim] SMTP sessions for multiple recipients when using a sm…

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Συντάκτης: Joerg Weber
Ημερομηνία:  
Προς: exim-users
Αντικείμενο: [exim] SMTP sessions for multiple recipients when using a smarthost
Hi folks,

I've looked through the archives but either noone has brought this up
before or I used the wrong search terms; any pointer to a FAQ is
appreciated.

My sendmail guru insists that when using sendmail with a smarthost,
sendmail will recognize that in the case of one mail with two ore more
recipients, two or more identical mails are about to be delivered to the
smarthost and sendmail therefore transfers the mail just once, with
multiple recipients. That saves bandwidth.
What exim seems to do is transfer one mail per recipient, meaning that a
2MB mail to 10 recipients generates 2x10MB traffic (instead of just
1x2MB).
I'm pretty sure I miss a config option, somewhere. Does max_rcpt and
serialize_hosts do the trick here?

Cheers,

Joerg

--
Joerg Weber M. A.
Network Security

infoServe GmbH
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