Nortel Contact Center Multimedia Installation And Maintenance Manual page 1316

Troubleshooting
The system fails to send an auto-acknowledgement or e-mail
response to a customer
Verify the following:
An auto-acknowledgement is set up in the Multimedia Administrator.
The SMTP service is running on the e-mail server.
The Contact Center E-mail Manager service is running on the Contact
Center Multimedia server.
The customer's e-mail address is correct.
Authentication mechanism unsupported
If, after submitting the EHLO command, the server responds with error codes
500, 501, or 502, then SMTP Authentication is not supported on that mail server.
If you receive a message "504 Authentication mechanism unsupported" after the
AUTH LOGIN command, it is possible that your mail server conducts SMTP
Authentication by either not encoding the logon credentials or by using CRAM-
MD5 encoding. Contact your distributor for further details.
1316 Contact Center Multimedia/Outbound
Standard 7.16