Exchange Server

Peter Juuls · Guest

I am asked to have my Exch2003 bridgehead server deliver outbound mail on
alternate ports, a different port for each mail domain, like this
1) for mail domain "domain1.com" mail should be delivered on server
"non-exchange-mailserver" on port 2525
2) for "domain2.com" on port 2526
3) for "domain3.com" on port 2527
4) for the Internet on standard port 25 on target servers

By testing I found out that this can be done by adding 3 new ip-addresses to
my Exch2003 bridgehead server, each with a new SMTP Virtual Server that
listens for inbound mail on standard port 25 and delivers outbound mail on
alternate ports 2525, 2526 and 2527, and each with a new SMTP Connector that
handles the maildomain.

Q: This appears to me as a very clumsy way to do it, and I don't want to add
ip-addresses to my server.
Anybody knows a smarter method ?

Thanks.
Best regards
Peter Juuls

mitch · Guest

You should be able to do it with out adding the IP addresses just create
seperate virtuals that listen on the port you want it to send on. Mail will
still come from the other company's on the port 25 smtp Virtual but go out
on the virtual you have setup for their domain.

Peter Juuls · Guest

In one of my tests, I had this setup with a single ip-address:
1) SMTP Virtual Server #1: Listening on port 25, delivering on port 25
2) SMTP Virtual Server #2: Listening on port 2525, delivering on port 2525
3) SMTP Connector #1 with SMTPVS1 : Address space = * (all domains) and cost
10
4) SMTP Connector #2 with SMTPVS2 : Address space = domain1.com and cost 1
I expected mails received on SMTPVS1 to be handed over to SMTPVS2 and
delivered on port 2525, but instead Exchange tried to deliver on port 25 and
returned the mail as undeliverable. Afterwards I configured both VS's in the
same SMTP Connector, but still the mail routing failed.

From the test I conclude that SMTPSV1 can only pass mails to SMTPVS2 if
sending and listening ports match.
But I hope I am wrong???

Best regards
Peter

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