Authenticates the user to the SMTP server using the specified authentication method that does not require credentials (NTLM or GSSAPI).

      Overload List

      Authenticate(SmtpAuthenticationMethod)Authenticates the user to the SMTP server using the specified authentication method that does not require credentials (NTLM or GSSAPI).Authenticate(SspiAuthenticationMethod, String, String, String, String)Authenticates the user to the SMTP server using the specified GSSAPI provider.Authenticate(String, String, SmtpAuthenticationMethod)Authenticates the specified user to the remote SMTP server with the specified credentials using the specified authentication method.Authenticate(String, SmtpAuthenticationMethod)Authenticates the user to the SMTP server using an OAuth token.Authenticate(String, String)Authenticates the specified user to the remote SMTP server with the specified credentials.
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