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Unmask source ip address on smtp relay

MKuma
Nimbostratus
Nimbostratus

Hi,

Could you help me unmask the source ip on the smtp servers. 

This is current setup, clients smtp traffic hits the VIP on F5 listening on port 25, F5 does loadbalance and snat towards smtp servers. We are trying to figure the source ips on the smtp servers. How could we achieve this, help will be highly apreciated. Thanks

2 REPLIES 2

Hi @MKuma ,

Without removing SNAT, as far as I know you are left two potential options. 

That said, removing the need for SNAT is the best way to get the true IP into the SMTP server, but of course it might mean you need to rearchitect how your mail servers connect to the F5.

Thanks,
Josh

 

Thanks Josh!