Email settings saved successfully. But an error occurred while trying to check connection with mail server – Problem connecting to mailbox.

Hi Everybody,

We have a problem using the setup of Mail Server Settings :
All settings looks good, server name / ip address - user - password etc ...
Another topic said that the best with a Exchange 2007 server is using the POPS Email type (995)

If i type a telnet command line on our helpdesk machine to the mail server : telnet mailserver 995 > the connection is established

but when i want to save my configuration on the Mail Server Settings (servicedesk), i get the message :

Email settings saved successfully. But an error occurred while trying to check connection with mail server – Problem connecting to mailbox.

I don't know how can i solve this and where i can find something ... :-(

If you have any idea !!!

Thank you in advance !