On Fri, 22 Sep 2006, W B Hacker wrote:
> > Not true for Exim provided that both the virtual servers are using the
> > same IP address (as you have stated that they are). Independent of the
> > domains, Exim sorts outgoing addresses according to the host lists they
> > route to, and uses a single connection for those that are going to the
> > same hosts (up to the max_rcpt limit, and subject to having the same
> > added headers, rewritten return-path, etc, etc. that is, when the
> > message bodies are identical).
> >
>
> I am sure you are correct about the code, but doubt that conglomeration /
> batching is even operative unless there is enough near-simultaneous remote_smtp
> traffic to have accumulate in queue at all.
I should have made it clear that what I wrote above applies to ONE
message with multiple recipients. Exim doesn't ever consider multiple
messages together at this level.
--
Philip Hazel University of Cambridge Computing Service
Get the Exim 4 book: http://www.uit.co.uk/exim-book