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Can port forwarding do failover to an alternative server?

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chrisisbd

Occasional Visitor
I run a postfix SMTP server on one of my home systems that manages my incoming mail. It would be very handy if the port forwarding that sends the incoming SMTP messages to the server could be configured to send them to an alternative server on my LAN if the main mail server is not available for any reason.

Is there anything in asuswrt-merlin that might be able to do this?
 
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