"5.7.4 Unrecognized authentication type error" stops outgoing email notifications from being sent

Document ID : KB000021380
Last Modified Date : 14/02/2018
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Description:

This document explains what to do when outgoing email notifications are not sent and the error "Can't login to the server Error (504) 5.7.4 Unrecognized authentication type" is received.

Solution:

If Mail or Relay servers that do not use any authentication except for the anonymous account are in use, then to solve the problem, deinstall these Service Desk Manager Email Options: smtp_security_level, login_userid and login_password. Then recycle the Service Desk Manager services.

The error should no longer appear, and email notifications should be sent out from Service Desk.