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Forum Discussion

Pantelis_Karbal's avatar
Pantelis_Karbal
Icon for Nimbostratus rankNimbostratus
May 02, 2008

SMTP load balance

Hello,     Attempting to load blamance my SMTP servers however I need to "preserve the clients original IP" for loging etc...     Is there any way to do so ? Stop the LTM from doing the SN...
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Ryan_Korock_46's avatar
Ryan_Korock_46
Historic F5 Account
May 03, 2008
Pantelis,

 

 

Modifying the source IP address via SNAT is an option that is most commonly used in order to ensure server responses are properly routed back through the BIG-IP, however it is not required for SMTP load balancing if your internal routing is set up correctly. If your SMTP servers will already route response traffic back through the BIG-IP without having the BIG-IP modify the source IP, then you can go ahead and disable SNAT on the Virtual Server, and your SMTP servers will 'see' the true source IP of the connection.

 

 

Let me know if this helps

 

-Ryan