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SMTP Error: 451

Jul 03 '14 at 09:21

Could you help me with the attached error please?

          login_method: LOGIN
            SmtpCmdResp: 451
            Failed to send AUTH LOGIN
          Failed to login using LOGIN method


When problems such as this happen, the only thing Chilkat can do is to provide as much information about the SMTP session as possible. In this case, it tells you the exact error returned from the SMTP server, and therefore you should try to find out what it means. My recommendation is to always Google the error message. In this case, Google the error number in combination with the key words of the error message. For example "451 spamhaus"