[Mailman-Users] Delivery to SMTP server very slow

Brad Knowles brad at shub-internet.org
Sat Feb 20 22:51:34 CET 2010

On Feb 20, 2010, at 3:27 PM, Mark Sapiro wrote:

> As I said, I think it would just be the config.pck. Everything else is
> open source software, but I don't think I want it. It's not that I'm not
> curious because I definitely am, but I don't want to accidentally send
> mail to any of the list members.

Another test would be to break up the large list into a number of smaller sub-lists with an umbrella list.  That would allow Mailman to have a lot more internal parallelism, and not get into lock synchronization issues over config.pck.  You could also run multiple sets of qrunners, if you split things correctly according to the "powers of 2" rule.

>                                   I suppose I could just create a pseudo
> MTA to listen on the SMTPPORT you use and just respond with 250 to every
> message.
> Actually, you could try that too and see what it does with your list.
> I'll make a little Python script for that.

Much simpler solution here is to use the "smtpsink" program that Wietse supplies as part of the test harness for postfix.

Brad Knowles <bradknowles at shub-internet.org>
LinkedIn Profile: <http://tinyurl.com/y8kpxu>

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