One message queue caused by the tease experience!

A friend's mail system keeps sending emails and keeping a record of them.

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The idea is to keep sending e-mails ...

Investigation

View logs, up to M-level.

Top view process, there is a management queue process Qmgr occupy a lot of resources, so based on speculation, may be the reason for too many queues.

postfix Delete messages in a queue

Postfix has a set of mail queue management mechanism, all queues of mail can be fully automated processing, but when sending a large number of messages, it is necessary to the queue for manual maintenance processing, for example, delete messages in the queue. Here are some common commands:

List messages that are currently in the mail Queue

Mailq

Delete all messages in the Queue

Postsuper-d All

Remove all messages that are in the deferred queue (delete messages that have failed to send)

Postsuper-d all deferred

Delete all emails that are in the deferred queue (you can see which letters were removed)

Find/var/spool/postfix/deferred-type f-exec RM-VF/{/}/;

Delete messages that you cannot send "three days ago"

Find/var/spool/postfix/deferred-type f-mtime +3-exec rm-f/{/}/;

List all currently unreachable messages Find/var/spool/postfix/deferred-type f-exec ls-l–time-style=+%y-%m-%d_%h:%m:%s {}/;

Delete the NIN record in the "defer" column for more than 5 days find/var/spool/postfix/defer-type f-mtime +5-exec rm-f/{/}/;

Preset all postfix related messages will be placed in the/var/spool/postfix/directory, to understand how Postfix manages the queue, you can refer to Qmgr-postfix Queue Manager's manual.
Here are the uses for each directory

MAIL QUEUES

* Incoming receiving Mailbox

* Active is preparing to send mail

* Defered Unable to send the message, waiting to resend

* Corrupt messages that cannot be read or corrupted

* Hold suspended mail, need to manually start DELIVERY STATUS REPORTS

* Bounce each recipient's message status, records why the return letter is managed by Bounce (8)

* Defer each recipient's delivery status, explaining why the delay is managed by defer (8)

* Trace each recipient's sending status information, stating that the status executed by Postfix with "sendmail-v" or "SENDMAIL-BV" command is managed by Trace (8)

It's normal. The specific cause of the problem, but also continue to troubleshoot.

This article is from the "Ningzhiyuan @it sharing" blog, make sure to keep this source http://renzhiyuan.blog.51cto.com/10433137/1794639

One message queue caused by the tease experience!