At 03:58 PM 10/20/2009, you wrote:
Domains cost about $10 a year. Static IP addresses depend on your ISP.
Some are cheap, some are not, and some won't do it at all. However,
you do not have to have a static IP. You can use a service like
DynDNS.org , which I think is about $20/year (they have free
hosting, but for a
mailserver you're not going to be able to use just the free dynamic
DNS service).
Why wouldn't the free DYNDNS work for a mailserver?
That's what I use.
(well, ok, technically my mailserver is a anti-spam box, which then
relays the mail to my sever) but I did at one point have my home mail
server be the direct mail server while running dyndns's free service...