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.