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Why do I get the error message “Sender address rejected: need fully-qualified address “?

April 26, 2017address Error message sender

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Why do I get the error message “Sender address rejected: need fully-qualified address “?

1 Answer

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This is happening because your SmtpMail.SmtpServer is rejecting addresses. To resolve this make sure • all email addresses specified at MailMessage.To, MailMessage.Cc, MailMessage.Bcc and MailMessage.From are valid email addresses • you have permissions to relay through the server. • MailMessage.