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Stop receiving emails from MFP to Office 365 mailboxes

Calvin Goodman 86 Reputation points
2021-05-13T22:17:57.497+00:00

Background: Exchange 2010/2013 and Microsoft 365 Hybrid environment.

We use scan-to-email on Xerox network printers, the SMTP is pointed to our on-prem exchange server 2010, port 25 and no authentication is needed. We also have an email relay connector set up for all printers on Exchange 2010. Everything has been working fine for many years.

After we added Exchange 2013 to the mix, the problem started and the Microsoft 365 mailboxes no longer receive the emails from the printer, however, on-prem mailboxes receive it just fine. No matter we use Exchange 2010 or 2013 as the SMTP server in the printer configuration, when I ran the email test on the printers, the emails were sent successfully but only on-prem mailbox received it and O365 mailbox never received it. NO error. I could not locate any trace or queue on either Exchange servers or Exchange online.

All regular email flows are working as expected. Any suggestion is appreciated!

Thanks
Calvin

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. KyleXu-MSFT 26,246 Reputation points
    2021-05-14T07:33:14.317+00:00

    @Calvin Goodman

    I want to confirm with you, do you mean that you could send email from Exchange on-premises mailbox to Exchange online mailbox successfully?

    If so, I would suggest you try to Use Telnet to test SMTP communication on Exchange servers. If you cannot relay email with telnet, it means there exits issue with your Exchange configuration.

    In a coexist environment, you need to use Exchange 2013 as Internet facing server, which means you need to point all DNS records(mail.domain.com, autodiscover.domain.com and other records) to Exchange 2013 rather than Exchange 2010. After that, rerun HCW to choose Exchange 2013 as hybrid server. Then try to relay email again.

    If you could relay email from telnet successfully, it means this issue may related with the configuration on your Application. Please have a check with it.

    If the response is helpful, please click "Accept Answer" and upvote it.
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  1. Calvin Goodman 86 Reputation points
    2021-05-14T15:48:07.88+00:00

    @KyleXu-MSFT

    As you have suggested, I updated the DNS records of the new Exchange 2013 server. I also had to delist the IP of Exchange 2013 again with Microsoft. Now I'm able to receive the scanned doc from MF printers to the Exchange online mailbox.

    Thank you very much!

    Calvin

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