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outgoing smtp from 2 servers one public outgoing ip

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dgh2000

MIS
Jan 2, 2002
51
US
Ran into a problem with an exchange update. outgoing failed rDNS
Firewall is managed by ISP. Want to see if what I am asking is possible. Not sure of model or IOS of firewall so I know you can't be that specific.

Client has trouble getting firewall updates happen when expected/needed so want to set up the following for testing/cutover of outgoing email

two internal severs both sending email out to internet on port 25 smtp
NAT/PAT to same external IP as originating address port 25 which works for rDNS. Incoming SMTP goes to SPAM appliance so return path not needed.

Doable?

 
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