> Our Postfix relays (there are 3) seem to make one lmtp connection per > message, rather than sending multiple messages down a single connection. > > Do any Cyrus+Postfix users out there have tuning recommendations? I see a > lot of postfix lmtp_* config options, but I know little about Postfix. I make no guarantees about these, but try this out: lmtp_destination_concurrency_limit = 50 lmtp_destination_recipient_limit = 5000 lmtp_connection_cache_on_demand = no lmtp_data_done_timeout = 3600s It's been a couple years, but I definitely had oddball issues with LMTP under load and somewhere along the line these options fixed them. YMMV. The usual RTFineM about these applies too: http://www.postfix.org/postconf.5.html John -- John Madden / Sr UNIX Systems Engineer Office of Technology / Ivy Tech Community College of Indiana Free Software is a matter of liberty, not price. To understand the concept, you should think of Free as in 'free speech,' not as in 'free beer.' -- Richard Stallman ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
