Dear John, Since I we have just an SBS2000, we have only one DNS server, also located on the same machine is the AD, Exchange, SQL, ISA, etc. > You say you have split DNS. What is you external DNS server and what is the MX record on it? The only public MX record showing up is saf.tzo.com. All external e-mail will go to that server only. Also, there is only one host record (A) which resolves jedgroup.com. In our forward zone, we named jedgroup.com to the internal address (one adapter) and www.jedgroup.com to the external address, the 2nd adapter. > Are you having problems receiving e-mail sent from internal, Internet or both? We have trouble only receiving from the Internet. The Internal works fine. > You mentioned 3 different pieces of hardware, what are they for? (Gateway, Internet cable and Linksys router.) Can you please explain your network setup. From the Cable Modem: to the Linksys router to the first (www.jedgroup.com) adapter on the SBS2000 Server then the internal network adapter to the switch then to the workstations.