Notification Problem

Notification Problem

Hello here.
I am new in ServiceDesk plus, i import users from AD, and make  3 technician from author request. I setting email server, and from incoming email new incident create perfect. Notification to creator request sent well, but after assigned incident to technician, email notification to technician ton sent, Site i not setting -  i have one site with LAN.
Please help me to  setting notification.
Version SD 9.3 release 9313
Best regards, Oleg Ivanov

                  New to ADSelfService Plus?