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'550 relaying mail to *** is not allowed'
Hi guys,
I am getting the following error message when sending email to some domains (such as york.ac.uk and macrovision.com). The email addresses do exist as I can send the same emails from my hotmail account.
The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '***@york.ac.uk'. Subject 'Alight Boss', Account: 'pop.ntlworld.com', Server: 'smtp.ntlworld.com', Protocol: SMTP, Server Response: '550 relaying mail to york.ac.uk is not allowed', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79
Any ideas??
Cheers,
David
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