Sending a testmail from a server with a configured exim is easy as pie. From your usershell: tell exim that...

Investigate why mails are frozen The exim documentation says: Freezing occurs when a bounce message encounters a permanent failure because...

Like Railscasts or Ruby Tapas, but for Linux.

swaks is a very nice tool to test SMTP. For the most linux distributions you can easily install it with...

Create a 1 GB file to swap to (we have sufficient space on / on this machine. Use a different partition...