SpamCop anti-spam service suffers an outage after its domain expired
In case you were suffering from all mails being marked as SPAM, this might be the culprit:
LinuxFreek.com — Hosted on 🇪🇺 Scaleway Stardust with Native IPv6 | IPv4 Proxy, WAF & DNS powered by 🇳🇱 DutchIS
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Comments
It had our RBL checks confused, that's for sure.
RBL servers are expected to return a response in 127.0.0.0/8 range for a positive response.
If the domain is resolving to parking page, the response is not in 127.0.0.0/8.
Why don't the RBL querier reject such invalid responses?
Sloppy design, sloppy code…
No hostname left!