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Ray_Sbrusch_941's avatar
Ray_Sbrusch_941
Icon for Nimbostratus rankNimbostratus
Oct 28, 2009

Preserving Client IP address for SMTP traffic

I know this topic has been discussed in the forums multiple times, but I never found implementation details which dont' require iRules or putting the BigIP in bridging mode.     I would li...
config
design
Ray_Sbrusch_941's avatar
Ray_Sbrusch_941
Icon for Nimbostratus rankNimbostratus
Oct 28, 2009
Thanks for the tip Aaron. Netcat and wireshark helped identify the real problem.

 

 

My test servers was actually connected to an old Cisco load balancer. Even though we change the default route on the server, the Cisco sent the responses back to the firewall instead of the F5.

 

 

I also created a forwarding IP virtual server so we could access the real server.