[Mailman-Users] Getting mailman to use the same smtp connection for messages sent to the same domain

Simon White simon at mtds.com
Fri Jan 31 17:49:25 CET 2003

31-Jan-03 at 18:21, Gareth Hopkins (gareth at za.uu.net) wrote :
> On Fri, 31 Jan 2003, Simon White wrote:
> SW>31-Jan-03 at 14:39, Gareth Hopkins (gareth at uunet.co.za) wrote :
> SW>> 	Is there a way to get mailman to deliver messages to the same
> SW>> domain in one smtp connection.
> SW>>
> SW>> 	Example
> SW>>
> SW>> 	a at foo.com
> SW>> 	b at foo.com
> SW>> 	c at foo.com will all be delivered in the same smtp connection.
> SW>>
> SW>> 	At the moment it is connecting, delivering to a at foo.com, then
> SW>> disconnecting. Then connects, delivers to b at foo.com and disconnects and
> SW>> so on and so on.
> SW>
> SW>Use an MTA that supports connection pooling or whatever it is called,
> SW>instead of mailman?
> 	I am using postfix but it looks like when the messages are sent
> mailman sends out list-bounces email to each address. This causes a
> single connection to be made to the same host.

You have a point. Mailman is injecting to the MTA so if it does
connect/disconnect etc then this will affect even Postfix. So, there
does need to be a way to have Mailman open a single connection to the
server for each domain, and then do RCPT TO: several times.

I *thought* that was what it did anyway... can anyone else prove me
wrong / right?

|-Simon White, Internet Services Manager, Certified Check Point CCSA.
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