Hi Postfix Users, I have scoured the web for an answer to this. Sometimes in the postfix log, when a message does not send right away, the log will say "(queue active)".
When I use the QUEUE ID to search the mail log for all associated logs for the message, there often isn't any further information. But, I do see that "postfix/qmgr" is the process. I posted about this here: https://serverfault.com/questions/722483/postfix-sending-delay-many-queue-active-messages-in-log However, I don't have a satisfactory answer. Is there any specific reason why this happens? Or is it just multiple things? If it is multiple things, I think those causes may be: 1) system load too heavy for efficient message delivery 2) current mail queue busy 3) DNS lookup for recipient mail servers not giving a fast response 4) The recipient mail server is tarpitting the connections Hopefully there is some additional information out there that can help. Thanks! :-) -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html