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120 Points

Mon, Jan 7, 2019 4:36 PM


Error CODE 550 when sending to email address

I can send an email from the account to an external address.  When I try to reply to that email it says there is no such user see below.  Why?

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients.

<>: host[] said: 550 No Such
User Here (in reply to RCPT TO command)

Reporting-MTA: dns;
X-Postfix-Queue-ID: DFAE38201DC
X-Postfix-Sender: rfc822;
Arrival-Date: Mon, 7 Jan 2019 16:32:30 +0000 (UTC)

Final-Recipient: rfc822;
Original-Recipient: rfc822;
Action: failed
Status: 5.0.0
Remote-MTA: dns;
Diagnostic-Code: smtp; 550 No Such User Here

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