Mail Fetching issue using office365 mail

Mail Fetching issue using office365 mail

•Email settings saved successfully. But an error occurred while trying to check connection with mail server Problem connecting to mailbox. ​
​​
​I have restarted the SD Plus​ & checked the connection through telnet ​
​ports 143,25,110 are working.​
​​
​Any Suggestion???
                New to ADManager Plus?

                  New to ADSelfService Plus?