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 -- https://bitfolk.com/ -- No-nonsense VPS hosting