Comment 17 for bug 1819977

Great workaround tip thanks @strredwolf.

You can use either 208.83.137.117 or 208.83.137.118, the current problem is with 208.83.139.205.

To test, set the ip you want to test in /etc/hosts. Example:
208.83.139.205 discovery.razor.cloudmark.com

Then:
# echo "test" | spamassassin -D razor2 2>&1 | grep " csl"
...Razor Discovery Server discovery.razor.cloudmark.com had no valid csl servers...
OR
...Discovery Server discovery.razor.cloudmark.com replying with csl=c302.cloudmark.com...