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Platform : ASP.NET
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Category : Mail

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

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.From has permissions to relay through the server

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