Configuring Exchange 2007 to relay mail for externally hosted website

We are moving our website from in-house to an off-site hosted solution.  We need to configure Exchange 2007 to relay mail from the hosted site through our exchange server.    

I have configured a "receive" connector using the following:
http://blogs.technet.com/b/exchange/archive/2006/12/28/3397620.aspx 

It will send to addresses within the domain, but not to external addresses (comcast.net, microsoft.com, etc.)

What do I need to do to get the mail delivered through the Exchange server to another domain?

Thanks!

The Exchange Server works fine if you are using a mail client or OWA, it's just the relay that is having problems.
Georgia_BAsked:
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davorinCommented:
The link you have posted actually it is enough to configure relaying on exchange server. (Accepting mails for internal recipients is it not relaying.)

Which option did you choose? Please check the instructions again. Maybe you have forgot something.
Georgia_BAuthor Commented:
I chose option 1. It is so straightforward I can't really seen anything that I could have missed.

The local/network setting is set to all ip's on port 25
Remote network shows the 2 ip addresses that would be sending the message
Authentication has Transport Layer Security and Externally Secured checked off and
Permission Groups has Exchange Server checked.

I used the gui for everything.  I can get messages into the Exchange Server, just not out of the Exchange server domain.

Any suggestions?
davorinCommented:
Try to remove "Transport Layer Security" checkbox.
If that will not work try also to remove "All Available" entry on local network settings and enter the IP address of your network adapter on exchange server.

Are the mails sent from website using your mail domain?

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Georgia_BAuthor Commented:
Thanks for your help.  The connector was setup correctly as I can send to several external websites.   It seems that Comcast is requiring a reverse pointer.  I have one for the mail server, but there is an old Exchange 2000 in the mix (don't really know why) that has an SMTP mail connector.  Since the old server is referenced in the log files for the failed delivery, I think if I can remove the routing connection to the old server my problem might go away.

Since it's not my Exchange Server, I can't just delete it.    Any ideas if I am on the right track on this one?
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davorinCommented:
Is it Exchange 2000 server configured for sending outgoing mail in you organization?
Georgia_BAuthor Commented:
No, it isn't supposed to be.  The DNS records and pointers all direct mail through the 2007 server. I will turn on logging and see if all of the smtp is trying to go through this server or only part of it.
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