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POP3 Service and SMTP - Can Send emails, But cant receive

I have a server 2003 that is running the POP3 Service for .Travel domains we send marketing emails through.. In the POP3 Service I have roughly 10 .Travel domains and they are able to receive and send email... I added a .Com domain to the POP3 Service and that is the account that can send, but can NOT receive. Within IIS there is a Default SMTP Virtual Domain and within the domain there are roughly 10 .Travel domains listed. I have added a .Com as an alias (local) domain. I am still unable to receive email. I have restarted IIS and the POP3 Service and still having the same issue (send, but cant receive).
Watch Question

Does the 2003 server have an MX record in DNS?  Do other servers (Exchange?) have or also have MX records for that domain?  If so, you may need to set up a forward.  If not, once you put in the MX record and it is replicated through DNS, it should work if everything else is configured correctly.
Top Expert 2011

Is there an MX record for the new .com domain?
Also make sure the IP address of the server pointed to by the MX record is reachable from wherever you're trying to reach it from.


Here is the error message when I try and send and email to abuse@navigatormail.com

Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.

The following organization rejected your message: ctomail.navigator.travel.

Diagnostic information for administrators:

Generating server: EXEDGE1.company.com

ctomail.navigator.travel #550 5.7.1 Relaying Denied. ##

Original message headers:

Received: from EXCHANGE2.ruf.com ( by EXEDGE1.company.com ( with Microsoft
 SMTP Server (TLS) id; Mon, 7 Nov 2011 10:10:01 -0600
Received: from EXCHANGE2.ruf.com ([fe80::c015:5fa7:b983:c481]) by EXCHANGE2.ruf.com
 ([fe80::c015:5fa7:b983:c481%12]) with mapi; Mon, 7 Nov 2011 10:10:00 -0600
From: Bob <Bob@company.com>
To: "abuse@navigatormail.com" <abuse@navigatormail.com>
Date: Mon, 7 Nov 2011 10:09:59 -0600
Thread-Index: AcydZ7KmyHoFHDk8QeaQkThcQsP6nw==
Message-ID: <2A28DC8C0219414FACD5AE21582888D425037E29@EXCHANGE2.ruf.com>
Accept-Language: en-US
Content-Language: en-US
acceptlanguage: en-US
Content-Type: multipart/alternative;
MIME-Version: 1.0
Return-Path: bob@company.com
X-GFI-SMTP-Submission: 1
X-GFI-SMTP-Submission: 1
X-GFI-SMTP-HelloDomain: EXCHANGE2.company.com


In Nettica.com (our DNS company) I have a host A records set up for newdomain.com to point to an external address (64.151.xx.x) and. I also have a Mail (MX) for newdomain.com to newdomain.com.

I checked our Internal DNS and I have a Pointer (PTR) 10.10.6.XX with data of newdomain.com

What am I missing?
It sounds like in IIS the SMTP virtual server for navigatormail.com is not allowing relay traffic inbound.  It should be configured to accept (without authentication) traffic from the exchange servers (perhaps -

ctomail.navigator.travel should be the IIS server, if I've interpreted this correctly.


Correct... the ctomail.navigator.travel is in IIS. However the new domain.com is taking its spot.. so ctomail will be gone and the new domain.com will use its IP addresses etc.