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Relaying Mail from Internal Machines [message #1167] Tue, 28 June 2005 12:12
clarke-pj
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?


Thanks
Peter
Re: Relaying Mail from Internal Machines [message #1168 is a reply to message #1167] Tue, 28 June 2005 16:57 Go to previous message
support
Messages: 919
Registered: April 2004
Senior 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?

You can either configure the IIS SMTP server to forward mails to the
Exchange server on port 26 directly or if this is not possible change
NST's incoming port to 26 and have Exchange listen on port 25
(remember to configure your firewall to redirect incoming SMTP traffic
to port 26 in this case).



Customer Support
Byteplant GmbH
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