Checked and marked very usefull.
Thanks for that greate article. I work at an small webhosting company, your text helped answering most of the major questions about implementing an Spamfilter for our Mailservers.
I hope you will write more articles like this one in the future.
Difference between SCP and SFTP?
Maybe i'm just to stupid but are those to the same or different Protocols?
But thanks for the chroot ssh part of the tutorial, it helped me a lot.