The login for the webmail is no longer a separate page. You can now login to the webmail directly from this page. For now, the login fields have been highlighted to make the login are more obvious.
The mail administration interface http://postfixadmin.covisp.net/ was offline from yesterday while some changes were made to the backend software. If you tried to access your domain’s configuration or change a user’s email password during this time you were redirected to the main site. The interface is now back online and available to all users.