Mail server settings not saved in Mange Engine service desk plus V10.5

Mail server settings not saved in Mange Engine service desk plus V10.5

Dear all,

kindly i need your support that i am facing an issue with mail server settings in Manage Engine Service Desk Plus V. 10.5 

in the attached file our mail server setting 

the error type:FAILURE :E-mail settings saved successfully. But error occurred while trying
to check connection with mail server - Problem connecting to mailbox


so i need your support and connect remotly with me to fix this issue 


all mail server settings are correct with exchange Mail server 

                  New to ADSelfService Plus?