I will try to explain the situation we are currently in. The client (duvallhome.org) is using a hosted POP accounts from "spiderhost.com". They decided to move their mail to the onsite SBS 2008. i contacted spider host and had them create MX and A records and they also agreed to allow us to use them as a Smart Host relay (smtp-spiderhost.com):
Record FQDN Record Type Record Value MX Pref
mail.duvallhome.org. A 220.127.116.11
duvallhome.org. MX mail.duvallhome.org. 10
I have forwarded port 25 in the watchguard to the LAN I of the server and checked with our ISP (Brighthouse networks) that they are not blocking port 25. Which they are not.
Here is where it gets weird. The users pop accounts are still active through spiderhost.com untill all of the users are cut over and working.
If one of the users POP accounts are disabled then that user can send but not receive using SBS 2008. If that users POP account is enabled then they can send and receive through SBS 2008.
Right now it is basically a gigantic mess. I am not sure how to proceed.