Delete mail queue from or to a specific email address
Some times, you may need to delete mail queue from or to a specific email address in your Postfix mail server. For example, if you get spam attack that fills your server with a lot of emails from the same sender email address or to the same recipient email address, you need to clean those emails from your mail queue.
Manually deleting those email is very time consuming. Here are the step to clean those email with one single command:
for i in `/usr/sbin/postqueue -p|grep 'user@domain.com' |awk {'print $1'}|grep -v 'user@domain.com'`; do /usr/sbin/postsuper -d $i ; done
This command will delete mail queue from or to user@domain.com. To check current mail queue, run this command:
/usr/sbin/postqueue -p
Your mail queue will be much shorter.
Last week, I take the Sonicwall certification and successfully passed the exam at the first take. Now I am a Certified SonicWALL Security Administrator (CSSA) for Network Security Essentials.
About two weeks ago, one of my virtual machine was suddently turn off when VCB was running to backup that VM. I cannot turn on the VM. The problem happens because of the CID-Parent CID mismatch. The snapshot created by the VCB process have mismatch ID. The problem already solved, but too bad, the VCB process left 6 VMs with snapshot named _VCB and/or Consolidate Helper - 0. 
Microsoft has released service pack 2 for exchange server 2007 on August 24th, 2009. It is available for download 
