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SonicWALL open Port 25 to specific external IPs only

Hey everyone.

I am having some trouble configuring the SonicWALL to only accept SMTP traffic from a few external IP addresses. We have Hosted Websense which removes spam for us before sending it along to our server.

I created Address Objects on the SonicWALL with the proper network addresses. I then went to Access Rules on the firewall and enabled these address objects to the WAN interface.

Are these supposed to be pointing to the mail servers internal or external interface? I tried both and neither would work.

Attached 3 pics of the setup config... what have i done wrong?
sonicwall.jpg
sonicwall2.jpg
sonicwall3.jpg

tjdabomb

do you also have address objects for websense 2, 3, and 4? Is there a service in the Sonicwall for "SMTP Receive email"??

tamaneri

ASKER

I don't see a "SMTP Receive Email" setting.

I see:

SMTP (Anti-Spam Inbound Port)
SMTP (Send E-mail)

I tried it first with Anti-Spam Inbound Port and it wouldn't work either.

I added both SMTP's to the services for my exchange server (see pic), but that opens port 25 to everyone from what I can tell.

Also attached snapshots for the other websense connectors
sonicwall4.jpg
sonicwall5.JPG
sonicwall6.JPG
sonicwall7.JPG

tjdabomb

i am not entirely familiar with websense, but, is it possible that you need a pop3 connection to the websense in order to get the email to your local exchange box? Kinda like your exchange acts like Outlook and needs to pop3 mail inbound from websense.

ASKER CERTIFIED SOLUTION

digitap

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SOLUTION

Cas Krist

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Cas Krist

Thanks for the points, good luck.