Dear, yesterday I realized that the mail queue of my SMTP relay server is about 110.000 mails, and the warning log file tell me:
Mar 20 10:00:08 RELAY1 postfix/qmgr[55666]: warning: mail for [10.0.0.1] is using up 20000 of 20000 active queue entries Mar 20 10:00:09 RELAY1 postfix/qmgr[55666]: warning: you may need to increase the main.cf smtp_destination_concurrency_limit from 20 Mar 20 10:00:10 RELAY1 postfix/qmgr[55666]: warning: please avoid flushing the whole queue when you have Mar 20 10:00:10 RELAY1 postfix/qmgr[55666]: warning: lots of deferred mail, that is bad for performance Mar 20 10:00:12 RELAY1 postfix/qmgr[55666]: warning: to turn off these warnings specify: qmgr_clog_warn_time = 0 I have setup port TCP/25 (SMTP) and port TCP/587 (STARTTLS), both listening OK. I have a transport option in order to send all the internal mail through the corporate mail server. What do I have to do in order to tune the queue performance and so put to work again the mail service??? Thanks in advance to you. Roberto
