[MM3-users] Mails are stuck in Mailman Pipeline Queue

Hi Team,

       I am currently running Mailman 3 with version 3.3.1 and in-built

postfix version 2.10.1-6 on RHEL 7.5 with PostgreSQL 11.7 version with default values. I am almost running 2000 lists with 64 GB RAM and 8 Cores on a single VM and on which all the mailman 3 components are running. I have been running this setup in production for the past 2 years and 6 months.

       I have been seeing a special scenario suddenly: most of the

mails that are sent to this server are going to the pipeline queue and not getting released from there.

       No configuration changes are done and I'm not sure why the mails

are getting stuck there. I have recreated the list but no luck.

       Could not identify the root cause. Please help in this regard.

-- Thanks & Regards, Shashi Kanth.K 9052671936