Route mail for specific domains to a different smarthost

I have an SBS 2003 Server using No-Ip's alternate port smtp sevice.  This has a cap on daily outgoing email traffic.  I use this to get around sending mail from a dynamic IP (comcast).

Someone suggested that for specific domains forwarded through this server, I could set up a 2nd SMTP server and filter messages for just say, comcast.com, through the ISP's mailserver instead.

How can I set something like this up in Exchange?

Thanks,
Fred
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fredimacAsked:
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
You could set up a separate SMTP Connector, but that is a more complicated solution than what I believe you should do to alleviate your problem... why don't you just use Comcast's SMTP server as the Smart Host instead? (which would be smtp.comcast.net)

Jeff
TechSoEasy
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fredimacAuthor Commented:
We use the no-ip.com servce to avoid mail rejected by servers that require proper RDNS lookup.  Comcast won't do PTR record for their dynamic IP's.

I am looking for the proper configuration of a 2nd smtp virtual server.
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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
You don't need a PTR record that matches your domain name, you just need one that relates to the IP and Comcast DOES provide that.  I'd give it a try at least... it's much simpler and you don't have to worry about the limits.

Jeff
TechSoEasy
0
fredimacAuthor Commented:
This is not exactly true.  I have another client who can't send mail to comcast or aol due to RDNS failure.  This client has suffered the same symptoms. Also, comcast throttles their mailserver when too many simultaneous connections happen at the same time.

I'm just looking for instructions re: how to route mail for a specific domain out a specific smtp connector.


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Jeffrey Kane - TechSoEasyPrincipal ConsultantCommented:
You'll find that here:  http://www.amset.info/exchange/smtp-connector.asp

Jeff
TechSoEasy
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