I implemented an Exchange 2003 front-end server this weekend. I also have GFI Mail Security and Mail Essentials on it. At first it was working properly until I changed the local MX record to point to the mail relay instead of the Exchange server. I'm referring to the local MX record that is returned to users within the perimiter network. I noticed emails not being sent out once the local MX record was changed. I went into the DNS panel and changed it back, however, when I do a nslookup, then set type=mx, then I enter in my mail domain, it still returns the IP address of the front end server. When I look in the DNS panel it shows that the MX record is pointing to the Exchange server, not the front end server. I even deleted the record and it still appears. What should I do? For now, I have Exchange sending emails directly out instead of it forwarding to the front end server. (the reason I'm forwarding to the front end server is due to GFI Mail Security and Essentials being on it). Currently the only was I can send mail out is directly through the Exchange server. When I set the Exchange server to send all mail to the front end server via smart host no emails are sent. Also, when I do a MX nslookup on my mail domain, the front end server's IP address is returned, even though there is no MX record created.