Comment 10 for bug 1819977

Seems to be a server error from the remote site.

I tested several times with: echo "test" | spamassassin -D razor2 2>&1 | less

Sometimes the error occurred, other times not. The only difference was that - when it worked - it showed:
Mar 15 11:12:48.739649 check[21141]: [ 8] Discovery Server discovery.razor.cloudmark.com replying with nsl=n002.cloudmark.com

whereas on the other hand, when it didn't work, it showed:
Mar 15 11:13:06.607983 check[21146]: [ 5] Razor Discovery Server discovery.razor.cloudmark.com had no valid nsl servers

So for me it seems that the remote site has some trouble, not the client installations.
Hope, they fix it soon.