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SMTP IP on a different IP then the UTM

Hi all,

I guess that it is passed this forum but I'll ask it again.
I have 3 Public IP's. One (x.x.x.113) is for the UTM and the other for WAP (x.x.x.115). Now I want to setup a mail server and
use the Email Protection for this mailserver and want to use a different IP (x.x.x.114) for the mail.
But when I enable Email Protection it uses the IP of the UTM (x.x.x.113) and I want it on x.x.x.114.
Is this possible? if so, how do I accomplish this?

TIA

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0 gilipeled over 11 years ago

Hi ,

If you are using SMTP PROXY you can not use SNAT from your internal mail server to use another external IP address.
All traffic will be caught by the default gateway IP address and sent by it.
As I told you in my example you can only do SNAT for SMTP from your WAN ( default gateway address ) to change it to send with another IP address for all internals mail servers to send mail not from default WAN address.

All my best.
Gilipeled

Gil Peled.

CEO- Expert2IT LTD.

SOPHOS Platinum Partner.

Gil@expert2it.co.Il.
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0 gilipeled over 11 years ago

Hi ,

If you are using SMTP PROXY you can not use SNAT from your internal mail server to use another external IP address.
All traffic will be caught by the default gateway IP address and sent by it.
As I told you in my example you can only do SNAT for SMTP from your WAN ( default gateway address ) to change it to send with another IP address for all internals mail servers to send mail not from default WAN address.

All my best.
Gilipeled

Gil Peled.

CEO- Expert2IT LTD.

SOPHOS Platinum Partner.

Gil@expert2it.co.Il.
Cancel
Vote Up 0 Vote Down

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