http://morison.biz/technotes/articles/42 Public mail service requires a static IP and DNS support. Here is a quick list of what you need. IP & DNS Setup You'll need a static IP and access to the DNS config for you domain. For the static, it's a matter of requesting the static IP from your access provider...if your service supports such...if not, read the commentary at The Internet Server Project - Part II - Planning . For DNS, most likely the registrar for your domain has a web interface for making changes. Checklist A static IP, from your access or hosting provider An 'A' record pointing to a name to your static ip, using a name something like "mailserver.example.domain". In this guide we'll use example.domain as a placeholder for your own domain. An MX record for example.domain which points at mailserver.example.domain CNAME or A records for mail.example.domain, smtp.example.domain and webmail.example.domain. If you use CNAME's, point them at mailserver.example.domain, if A use your static IP. Next Step: Ubuntu Install en 2006-2008, Rod Morison Software technotes@morison.biz Wed, 08 Feb 2012 02:35:43 GMT Yet Another Community System http://blogs.law.harvard.edu/tech/rss 70