On Fri, Apr 20, 2018 at 06:42:03PM +0530, Ram wrote: > Is there a contention on the queue manager when the inflow is too quick ?
Well, show some evidence. > bounce_queue_lifetime = 5d I thought this is a system that should move mails as fast as possible outgoing. Why would it ever handle bounces? > broken_sasl_auth_clients = yes Authentication? > debug_peer_level = 2 Don't use that. > inet_interfaces = 127.0.0.1 Only listen on localhost. So you actually have the application and postfix battling on ressources on this system? Why? > lmtp_destination_concurrency_limit = 30 And there you have lmtp. > lmtp_line_length_limit = 9900000 You can't send such long lines, ever! > mailbox_size_limit = 52783082 I though this system should send, not retrieve mails? > mynetworks = /etc/postfix/mynetworks This does not make sense. > qmgr_message_active_limit = 200000 > qmgr_message_recipient_limit = 200000 200k messages at the same time? But also 3k recipient in the same mail? > smtpd_recipient_restrictions = permit_mynetworks, > permit_sasl_authenticated, check_client_access > cidr:/etc/postfix/relay_allowedips, reject What? > transport_maps = > cdb:/etc/postfix/bounce_transport,cdb:/etc/postfix/suppresslist,hash:/etc/postfix/transport,regexp:/etc/postfix/transport_regex,hash:/etc/postfix/emm_transport What are you doing? Your story does not fit the configuration. This looks like a generic purpose relay with authentication, but you told something different. If your application eats up all the memory, then you won't get any useful message rate outgoing. Bastian -- It is a human characteristic to love little animals, especially if they're attractive in some way. -- McCoy, "The Trouble with Tribbles", stardate 4525.6