SBS 2011 Setup Help, Comcast, DynDNS

Unfortunately we can't really help with this issue. Comcast blocks port 25 for spam on residential accounts, but they also do not allow running a mail server (on any port, using any workarounds) on residential service it is par of the terms of service you agree to when you sign a Comcast contract for service.

As such, EE policy is also written that experts will not assist innovating software, breaking DRM, circumventing licensing, or getting around such technical blocks. We can't help you circumvent Comcast's terms of service.

If this is  test server for learning or as a proof of concept, a hosted VM could be appropriate. You wouldn't be running the mail server on your connection. A small VM on amazon or azure is not expensive.

Of this is for production, get a business account from Comcast or another provider business accounts don't block 25.

Ether way, solves your problem legally.

Machienet:  Thank you for the response.  I understand how to deal with the dyanamic address from my provider using DynDNS and setting up my router, I have that already in place.  

My biggest question I guess is setting up MailHop (a DynDNS.com product if you will) with the Server.  Thanks for the write up on changing the port to 587.

cgaliher:  While true in this case that my home provider doesn't allow this, my ISP for my business also blocks this port, hence why I am trying to figure it out at home on a Hyper-V machine so I can figure it out for the real install.

Sadly, doesn't change EE policy. We cant help you circumvent your terms of service.

Ok, so I can work with it at my office where port 25 is still blocked but there isn't an issue with "legality"/breaking terms of service with having an email server being that it is a business connection.  With that being said, your comments don't help with the original question at hand.