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mkc451Flag for United States of America

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How to send mail from Exchange to another SMTP in same windows domain.

2 - SMTP servers in the same domain, Exchange 2010 and Domino App's Server. The Domino server runs several custom programs and use "mail-in" Databases. Essentially the database has an Email address and that is how data is sent to the server. The domino server sends email out the Exchange addresses and needs to receive email from an account on the exchange server that needs to forward it to the domino server.

My first though was, I think Exchange can use a send connector to forward any email addressed to a certain mail address to another SMTP server (ie the domino server) but I can't find a document that explains that. The other option I thought of was to use the Global Domain Document to create another alternate SMTP Domain on the Domino server. IE incoming mail to XXX.XYZCompany.Com that hits the exchange server, would have a rule that forwarded mail to XXX.DominoSTMPAlias.com which is a subset DOMINO.XYZCompany.Com ... I am looking for input how to handle this.
Avatar of Adam Brown
Adam Brown
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Configure the accepted domain in Exchange as External Relay if you don't have email addresses that match the domain on Exchange. Then set up a send connector for that domain that points to the Domino server. https://acbrownit.com/2019/03/22/exchange-server-email-routing/ gives a bit more detail about how this works. The External Relay setting is key because exchange won't accept any messages that it doesn't have in its accepted domains list.
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