How do I resolve issues with emails being sent to a wrong recipient in Exchange?

< 1 min read

Check sender's addressbook entries for wrong entries.
Reverify the users' email address to ensure accuracy.
Ensure the user is properly registered in Exchange environment.
Check all rules and forwarders to confirm none of them are sending emails inappropriately.
Check delegates to ensure they do not have erroneous permissions.
Verify that the messages are not being sent from an external address with SMTP relay.