[otrs] Connection to platform failed

hi to all... i user otrs 3.1.7 to work with my company customer and today i have some problems. my configuration is that: otrs in datacenter connected with customers active directory throught vpn connections and, if the customer is small, only the local database. today the vpn connection go down for 2 customers, and the platform block the login for agents and others customers... to solve the problem i remove the customers unreachable from config.pm... i want to know if is possible write some code in config.pm to check with ping the primary domain controller status, and if is offline, ignore the part of code that connect this active directory... thanks fo the help