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Forcing qmail to process e-mail in the queue

·92 words·1 min
Normally, qmail will be able to process the mail queue without any interaction from the system administrator, however, if you want to force it to process everything that is in the queue right now, you can do so:

sendmail: savemail panic

·139 words·1 min
If you see a large mail queue and your system’s I/O is increasing, you may find messages like these in your syslog:

2007


Dovecot: mbox: Can’t create root IMAP folder

·187 words·1 min
In some situations with dovecot running on your server, you may receive a message from your e-mail client stating that the “connection was interrupted with your mail server” or the “login process failed”.

Testing SpamAssassin with GTUBE

·44 words·1 min
If you have SpamAssassin installed, but you want to make sure that it is marking or filtering your e-mails, simply send an e-mail which contains the special line provided here:

Change Plesk back to short mail names

·145 words·1 min
If you have to use short e-mail usernames in Plesk (which is a bad idea), and someone accidentally sets the server to use full usernames, you can force Plesk to go back.

Relay access denied

·151 words·1 min
If you’re checking through your mail logs, or you catch a bounced e-mail with “554 relay access denied” in the bounce, the issue can be related to a few different things:

Horde refreshes when logging in

·51 words·1 min
If you find that Horde (with Plesk) keeps refreshing when you attempt to log in, and there are no errors logged on the screen or in Apache’s logs, check the session.