"too many timeouts" "disabling EDNS"

[online-reg]

Hi All: I'm seeing a lot of this:

too many timeouts resolving '10.141.202.89.sbl.spamhaus.org/TXT' (in 
'sbl.spamhaus.org'?): disabling EDNS

with various IPs, repeating endlessly in my 9.6.0 log.

Is this a configuration issue on my end? Or is it some sort of temporary 
failure on spamhaus's end? Or is this a benign message?