Q: Why am I getting error '550 This mail is not local' when trying send mail?
A: This happens because our mail server treats the message you are sending as SPAM. The message is considered to be SPAM if:
  • The number of recipients of the message is more than 50, OR
  • 'FROM' field is missing in the letter, OR
  • Neither 'FROM' nor 'TO' field contains an existing e-mail address on your mailserver.
Please make sure that none of the above conditions holds when you use your mail client, FrontPage, AspMail or mailto.exe program for sending messages.
Article ID: 428
Keywords: mail problem