Email Server Setup Tips
From Computer Tyme Support Wiki
Many of you are wondering "What did my server get blacklisted?" Unfortunately we live in a world on the internet that is both free and lawless and most email is spam. In the process of sorting it out innocent people are often victimized by criminals who hijack your servers. Sometimes in our efforts to fight spam we make a mistake and wrongly list you.
Nonetheless, here are some tips to distinguish you from spammers or to help you solve problems when you've been hacked.