SNAT Pass the source IP to the sever

Hello:

 

 

I have a Virtual Server, of SMTP protocol.

 

The problem is that in the log mail servers i see that all the connections are from the VS, and i cannot see the IP of the client.

 

 

So is there any way to pass the source Ip of the client to the mail server (thorugh the BIGIP)

 

 

I have configured the VS with SNAT in AUTO mode.

 

 

I don´t know how to solve this problems. Does anybody help me?

 

 

Thanks in advance

 

 

Best regards