I have a web server located elsewhere on it's own IP address using my main domain name, eg, hxxp://mydomainname.com
I have my own mail server located at another IP address (home)
I have MX records setup for mydomainname.com which point to mail.mydomainname.com, which (obviously in turn) has an A record pointing back to mydomainname.com
Clear as mud? :-)
When setting up the zimbra server, should I be giving it an internal server name of mail.mydomainname.com or mydomainname.com?