Abaqus installation issue with license server

The problem

I was installing Abaqus 6.14-1 in a Linux cluster outside my enterprise network. In order to allow the FlexLM license server to be reached from the cluster, I opened the appropiate ports in my firewall and tested it was Ok by connecting with telnet, e.g.:

# telnet 193.144.xxx.yyy 27000
Trying 193.144.xxx.yyy...
Connected to 193.144.xxx.yyy.
Escape character is '^]'.

But, during the installation process, when I was asked the license server address the installer couldn't contact it and returned an error.

The cause & the solution

In the license file, the first line had this form:

SERVER lambda 112233445566 27000

It turns out that the server name (lambda) was not public for security reasons and therefore it couldn't be resolved with DNS outside the enterprise network, so I used instead its IP address (193.144.xxx.yyy). For some reason, the installer and the FlexLM license server didn't like this, so after many tests, I finally found that if I change the license file line to this:

SERVER 193.144.xxx.yyy 112233445566 27000

...an reloaded the license daemon, all worked fine. That is, simply change in the license file the host name with its IP address.