Hey guys and girls , As the topic gives it away, i'm trying to setup a mail server on a vps i own. So i googled and got a few guides and found this one to be the best and choose to follow this one: Warning: Spoilers inside! http://flurdy.com/docs/postfix/ Anyway after getting quite far down of basic setup i exited ssh. Tried logging back in to realize i had locked myself out with shorewall. Luckily i'm not stupid and within 5-10 minutes managed to gain access again without reinstalling the OS or reverting to a backup. Long story short i need help, i just don't know what's wrong. Maybe because it's a old guide (back from 2010) or something else. If anyone knows what they're doing and would kindly help me and someone knows a better guide out there that i might of missed and not seen that would be great as i pay for my vps, why should i have to pay for email too when i can do it for free. Thanks.