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

Platform: ASP.NET| Category: Mail

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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