Hi,
I noticed that as of at least yesterday, BitFolk's DNS resolvers are
blocked from querying URIBL¹.
URIBL is a DNS-based blocklist of URIs mentioned in email spam. It
is used by default in SpamAssassin and other anti-spam products.
The usual reason for being blocked from querying URIBL is excessive
query volume. Their web site mentions a figure of 100k queries per
day.
I've had a look at the usage from BitFOlk's SpamAssassin service²
and the cluster is only checking about 7k emails per day. Possibly
7k emails expands to over 100k URIs to query, or possibly other
customers are doing excessive DNS queries - anyone using BitFolk's
resolvers to query will add to the count. I have asked URIBL for
clarification of what the issue is.
If the issue is query load then we will pay for a feed.
Until that is sorted out you will unfortunately be unable to query
URIBL usefully. It returns a value that SpamAssassin recognises as
"query blocked".
Cheers,
Andy
¹
https://uribl.com/
²
https://www.bitfolk.com/customer_information.html#toc_2_SpamAssassin
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