Hah, there are some funny quotes here, I especially like this one “Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it.” – Brian W. Kernighan.
Googling for some answers regarding why some mail-servers fail to identify themselves correctly, I found this amusing forum reply; Unfortunately, “reject_unknown_helo_hostname” is not acceptable to use, because too many Exchange Servers are configured to identify themselves with something that only appears in their local DNS. Apparently either Microsoft’s certification programs only produce people who can … [Read more…]
This is tested on Debian Squeeze, but should work on most Debian derived distributions and on other Linux distributions with small changes. I have written almost the same guide some years ago, but I wanted to add an extra disk to my QNAP NAS and decided to write it down again. Requirements; 2 identical disks … [Read more…]