Is there a way to slow down the delivery of Mailman to the subscribers of all my Mailing lists? We have one list that has 16,000 subscribers to one domain, all these accounts are on our mail server. Every time a message is sent out from this list, it really causes the load on our mail server to be high. Currently our Mail server is on a powerful 3 processor HPUX 11 NClass server with 2GB of RAM. Mailman 2.1.1 is on a Red Hat 8 Pentium 600mhz, using Postfix as the MTA.
I have Postfix setup to do slow delivery to this domain (isu.edu), but that doesn't seem to help. I also lowered the SMTP_MAX_RCPTS = to 3, thinking that might help.
Postfix is setup as: In Main.cf transport_maps = hash:/etc/postfix/transport slow_destination_concurrency_limit = 1
In Master.cf slow unix - - y - - smtp
In Transport isu.edu slow:
Any Suggestions like causing the smtp process to pause after sending out a boat load of messages and then resume again.
Kory Wheatley