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coda6_52611's avatar
coda6_52611
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May 12, 2010

SMTP, Client IP Preservation and multiple Virtual Servers

I understand that to preserve the source IP address of an SMTP client I need to turn off SNAT and have the gateway of the Exchange servers set to the virtual servers IP.     BUT, I have multipl...
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coda6_52611's avatar
coda6_52611
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May 13, 2010
Here is what we have, 1 VLAN with our SMTP servers.

 

 

There are five physical servers A, B, C, D and E.

 

 

There are 3 pools, Pool 1 has A and C as members, Pool 2 has B, C and D and Pool 3 has A, C and E.

 

 

I'm going to name the virtual servers with their last IP octet, so we have VS-193, VS-197 and VS-196. Pool 1 is associetd with VS-193, Pool 2 with VS-197 and Pool 3 with VS-196.

 

 

I would like the traffic flowing to VS-196 to keep it's source IP address, the exchange admins want to begin whitelisting/blacklisting applications using that VS.

 

 

If I change servers A, C and E's default gateways to the VS-196 address, wont the requests coming in on VS-193 and VS-197 to the A, C and E servers, leave on the VS-196 ip and mess with the traffic?

 

 

 

I don't know if that helped or not....