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I have a user with Exchange and he is getting bounced back emails (Not real bounced backs but look like it) and in the from it has our domain name and then the IP address which is not our IP. He is getting this type of emails often. &nbsp;Any ideas as to how and why this is happening?
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I have a user with Exchange and he is getting bounced back emails (Not real bounced backs but look like it) and in the from it has our domain name and then the IP address which is not our IP. He is getting this type of emails often.  Any ideas as to how and why this is happening?

Strange Emails

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