u/Excellent-Ad-2972

Hi all,

I'm in the middle of migrating from Exchange 2010 to Exchange 2016 in an on-prem environment.

I have a problem during the transition:

We still have multiple systems (third-party applications and printers.) that send emails via SMTP directly to the IP address of the old Exchange 2010 server.

These systems cannot easily be changed or updated.

What would be the best practice in this scenario?

thanks