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Relaying Mail from Internal Machines [message #1167] Tue, 28 June 2005 12:12 Go to previous message
Messages: 5
Registered: February 2005
Junior Member
On my network we have the firewall setup to only smtp mail to be sent from the mail server.
We have NST isnstalled on port 25 of this server and exchange SMTP server on port 26. We also use the relay protection by specifying valid mail addresses in NST.
Exchange can send and receive mails quite happily from this machine.

The problem is that we have a web server which generates mails as part of it's operations. It runs IIS and uses the IIS SMTP server to forward the mails to a "smart Host"
As the forwarding defaults to port 25, Is there any way in NST to add a whitelist of machines to allow forwarding to addresses other than those on the relay list?

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