Outbound mail and Smart Host

Posted on 2004-08-23
Medium Priority
Last Modified: 2008-03-17
I configure a  smart host in the SMTP connector of Excahnge 2003 server, the ip of Smart Host is point to another stand alone IIS server that has SMTP Virtual Server enabled.

I create a Local domain and Remote Domain in the STMP virtual Server of stand alone IIS server, In this Smtp Virtual Server, I assign the ip of exchange 2003 server as smart host to forward the inbound mail to excahnge 2003 server.

Now, IIS/Smtp Stand server forward the inbound mail to exchange server thru the static smart host (IP of IIS stand alone server); exchange server send mail thru static smart host to IIS/smtp stand alone server, Here is my questuin, How does the IIS/SMTP forward the outbound mail to internet?

Please advise.

Question by:joehuang
LVL 12

Accepted Solution

BNettles73 earned 120 total points
ID: 11875192

As long as your IIS SMTP server can perform DNS lookups of internet addresses and your firewall allows port 25 out to the internet it will route outbound directly to the internet ... if you need a more technical answer you can probably look it up in the Technical Reference ....

Author Comment

ID: 11973464
Thanks for the infor, I would add this link below for reference.

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