SMTP mail - route by sender address?

HCL Domino Domino Forum
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We have a “customer service” application that occasionally sends large volumes of mail.They are currently in the same Notes domain as our users but have their own inetrnet domain (xxx@internet2.com).

All mail is currently routed out out one primary outbound host (with a failover host available).

Routing mail by the destination address is easy, but is there any way to route outbound mail by the senders internet domain? Example: mail from all “internet2.com” senders would go to a separate, specific SMTP host, while the rest of our Notes domain outbound mail (various other internet domains) would go to the main SMTP host?

Thanks is advance…

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Subject: SMTP mail - route by sender address?

if all of your internet2.com users are on 1 server you can use the server’s config doc to route to a specific relay host of your choice. That’s all I can think of at this point.