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outlook exp and ms outlook sending email

By bobietoribio ·
The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was ''. Subject '', Account: '', Server: '', Protocol: SMTP, Server Response: '550 Relaying is prohibited', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

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outlook exp and ms outlook sending email

by Magetower In reply to outlook exp and ms outloo ...

This error occurs when the originating e-mail address does not match the mail server's domain. This is a security measure put in place to prevent messages from being 'forwarded' through a mail server that did not originate there.

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