On 10/6/22 15:08, Wong, Wesley wrote:
Hi, I am having some performance problems with Mailman 3 (version 3.3.5) when it sends out a lot of messages to people. We recently migrated from our old Mailman 2.1.x system to Mailman 3.x about 3 months ago. We host about 350 lists with membership counts varying between 10 to 1500 members on some of the lists. I noticed that outbound messages from Mailman to our outbound SMTP are getting delayed up to an hour when Mailman is processing a lot of messages going to lists.
I suspect the difference is your Mailman 3 instance has full VERP
enabled and your Mailman 2.1 instance did not. I.e., In MM 2.1, you did
not override the default VERP_DELIVERY_INTERVAL = 0 in mm_cfg.py, but
in MM 3 you have verp_delivery_interval: 1 in the mta section of
mailman.cfg.
I was wondering if there are good performance tuning tips to be considered for Mailman 3 (i.e. OS, database and/os Mailman Core). I am running the setup on a VM. Here is my configuration for VM and OS:
Search the Titles for performance at https://wiki.list.org/. The
articles you find are all written for MM 2.1, but you're really dealing
with the MTA and the issues are the same for MM 3.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan