Rejected email from

I believe I’m experiencing an issue similar to this issue: Rejecting incoming messages -

Specifically, whenever I get an email from my friend, it’s reported in the logs as

2022-03-01 22:18:51 [] X=TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256 CV=no F=<his email> rejected RCPT <my email>: Rejected because is in a black list at

However I both looked up on mxtoolbox,, and using dig (from the server hosting my email) and it comes up clean every time. (I am basing the dig coming up clean on getting an nxdomain response - and confirm that I get the return codes mentioned here when adding @ or similar to the dig command, but do NOT get it when I just use the default dns server with dig)

Additionally, when fortune smiles on us and hey uses a different relay server, it gets through just fine.

Would Hestia be using a different dns resolver than the system/dig is using?