I travel a great deal, and this means hooking into a dozen or so different net connection points. I have pulled my hair out for a very long time dealing with getting mail out of my outbox and delivered. I recently tried a cool software program called xray it worked for a while but the service keep failing and I don’t have time to deal with software that does not work all the time.
So I went hunting for a smtp relay service that I could use anyplace, anytime well Google took me to a bunch of extremely overpriced services. Eventually though I found that DynDNS has a mail outbound service and boy the price is right. I use DynDNS as part of a IP security validation process on some things I control thus getting setup took less than 5 minutes and I get 300 outbound messages a day for about $25.00 a year. There is no better deal out there. [MailOutbound @ DynDNS]