Two different people sending email to one user get the following message. One user is sending from a private company email and the others is sending from gmail.
Your message did not reach some or all of the intended recipients.
Subject: RE: Home Plans
Sent: 5/7/2008 8:03 AM
The following recipient(s) could not be reached:
'JohnK@abc.com' on 5/7/2008 8:03 AM
550 5.1.1 <JohnK@abc.com>... User unknown
Windows Server 2003Exchange
8/22/2022 - Mon
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