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Forum Discussion

graytt's avatar
graytt
Icon for Nimbostratus rankNimbostratus
May 11, 2018

X-Forwarded Rule for SMTP

Hello All,   We have an SMTP virtual server on our f5 Big IP VE 13.1.0 platform. It works without any issues. However, we would like to add a feature. Effectively, the auto-SNAT means the server o...
application delivery
devops
LTM
Chase_Abbott's avatar
Chase_Abbott
Icon for Admin rankAdmin
May 11, 2018

Well.... I did do this with a pair of Ironports so to preserve source IP, we used the BIG-IP as the external gateway. The removed the need for SNAT preserving source to destination. Worked great. Separate interfaces did the internal SMTP forwarding to Exchange CAS/Transport servers.

 

If you cannot do this for architectural reasons then I'll defer to the rest of the community. I haven't configured SMTP with SNAT to date.