Lock IP range Exchange 2003

[vostok1]

Hi.

What is the best way to lock Exchange 2k3, so it receives emails ONLY from a specified IP range?
Thanks for the answer.

Vostok1

 

[Zelandakh]

You can specify the IP addresses in the SMTP connector.

 

[vostok1]

Thanks. Can you explain further please?

How do I make both virtual servers to
receive ALL email through a connector?

So far, I created a rule in Message Delivery Properties\Connection Filtering:

Deny: 1.0.0.0 255.0.0.0
Permit: x.x.x.x (requested IP range)

I applied the rule in BOTH SMTP Virtual Internal Properties\
Advanced\Edit

Exchange is still receiving email from IP addresses that
are not specified in the permitted range.

Somebody out there is sending viruses and our Exchange accepts these emails. It happenes every hour or so;
several IP addresses with our spoofed domain name are used, and these emails bypass MXLOGIC servers (our online filter).

Thanks if answer.