lmgrd is not running: License server machine is down or not responding. (-96,7:2 "No such file or directory")
but only from some machines outside your domain, check that the SERVER line in your license file specifies the FQDN of the license server. The default is to use just the hostname.
SERVER myserver.mydom.com XXXXXXXXXXXX NNNNN
Most search hits on that error message say things about firewalls.