Mail

This is one of Exim’s more cryptic errors:

If you need to change the hostname that Sendmail announces itself as, just add the following to sendmail.

Often times, the wonderful webmail application known as Horde will spin out of control and cause unnecessary resource usage and often cause defunct Apache processes to appear.

I rarely try to toot my own horn, but I’ve created a pretty handy site.

To stop those evil double bounce e-mails in Plesk, just do:

You can edit /etc/drweb/drweb_qmail.

If odd bounced e-mails are coming back to the server or the server is listed in a blacklist, some accounts may be compromised on the server.

If you’re looking to get PCI/CISP compliance, or you just like better security, disable SSL version 2.

There are three main things to remember when it comes to the qmail queue:

If you find yourself in the sticky situation where kill -9 still won’t kill a sendmail process, check the process list.

If your server is spewing an invalid HELO, you could be blacklisted pretty quickly.

Setting up Postfix to handle mail for a virtual domain and forward it to external mailboxes is pretty easy.