Covering tips that I find usefull
Plesk 12 Mailman relaying denied
If you get “relay access denied” error messages on mailman and mailman messages are not going out then check to see if you have ::1/128‘ […]
Linux Admin
Server Migration DNS Propagation Solution
I have used this technique for a few years now so thought I should post it here as it doesn’t appear to break. Please note: […]
Cannot save sent message or Postfix permission problems.
I started getting a “couldn’t save sent message” error message in thunderbird. I logged onto the server and restarted courier-imapd and postfix and retried. Still […]
How to find the biggest files or directories on the server?
Just had a client call me due to the fact all the sites on his server were down. A quick check on disk space and […]
The GPG keys listed for the “CentOS / Red Hat Enterprise Linux 6 – atomicrocketturtle.com” repository are already installed but they are not correct for this package.
Atomic are moving everything under one key. To fix this error run this command;
Logging from to and subject in postfix
We needed to analyse the from, to and subject on one of our servers to deal with a persistent spammer. Add this to your header_checks […]
Blocking a spammer with firewall on a fresh chain.
A client uses fail2ban plus a number of other custom scripts to build his firewall to block unwanted access. The firewall table was getting very […]
Tracking which account is sending spam on a plesk server
This is not an easy task without knowing a few tricks as the log files are not an awful lot of help. Providing you have […]
qmail delete all emails from specific domain in queue
I installed qmailhandle and tried to delete using wildcards and it didn’t work. This command however does. /usr/bin/qmhandle.pl -h’\@domain’
flush the qmail queue
To retry all the emails in the qmail queue kill -ALRM `ps ax | grep [q]mail-send | awk ‘{print $1}’`