Hi, I had this issue intermitently while trying to fix it from a long time ago. Now after an update of ispconfig my server is sending span agan like crazy. Why is this happening how can i avoid this to happen Thanks.,
I doubt that your problem is related to an ISPConfig update. To find out why your server is sending spam, check the mail headers. Common reasons are hacked websites and insecure mail account passwords.
Finding spam sending php scripts on multiple sites servers http://www.pc-freak.net/blog/finding-spam-sending-php-scripts-multiple-hosted-sites-servers-find-spammer-scripts-servers/ This is a very good implementation to find spam website