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Community Member

mail relay

I have one exchange 5.5 (sp 4)mail server on Windows NT 4.0 (sp 6) installed on the inside interface of a PIX 515 FIREWALL, is there any way to disable the mail relay through the PIX? (having the knowledge that mailguard is enabled?

Thks in advance

Joseph

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Community Member

Re: mail relay

If you must have port 25 opened on the PIX, then this seems to be an Exch 5.5 question.

To make sure that relaying is not allowed by your 5.5 server, open Exchange admin, goto connections- Internet Mail Service-routing

click "routing restrictions" and make sure that only:

"Hosts and clients that successfully authenticate" is check, and nothing else.

You're done.

Jeff

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