Global email deliverability disrupted as SpamCop domain expires

8 points by vizzah 5y ago ↗ HN

I noticed many bounces today from my ages old self-hosted mail server because the IP address is suddenly "in a black list at bl.spamcop.net".

After further investigation, it seems SpamCop is producing false positives to all requests as their domain spamcop.net has expired yesterday and wasn't renewed in time.

SpamCop is one of the widely used DNS blacklist providers on the Internet.

Astonishingly, many ISPs seem to solely rely on responses from a single fault-proof source to determine if IPs should be blacklisted and all incoming e-mails blindly rejected.

Hard to believe, but many of your e-mails are currently not getting delivered due to someone forgetting to renew their domain, which so much of our personal and business functionality apparently relies on.

2 comments

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p0d 5y ago ↗

Thanks for the update. The laziness doesn't surprise me. I have often thought of running my own mail server. I have had a free business plan on Google for a long time. I will hold off until Google totally hack people off.

brechmos 5y ago ↗

I got hit by this yesterday. I run a postfix server with a spamcop check and email stopped coming through. I had fail2ban setup to shut out bad SMTP requests and interestingly this spamcop issue made fail2ban completely ban the incoming SMTP requests.

Thankfully I figured that part of it out, but it is nice to see where the issue actually came from.

[I took out spamcop checks completely.]