[Solved]ISPConfig 3.1 Open Mailbox button doesn't work properly

Hello when i press the open mailbox button it opens a new tab in that address: https://myserver.com:8080/webmail but the rightt address is: http://myserver.com:8081/webmail/
Also when i type this address: http://myserver.com/webmail does not work.
The only workng address is: http://myserver.com:8081/webmail/
How i can fix this? Thanks

 

thanks it worked