Spamhaus glitch Friday night

Blocklist provider and master spam-filterer Spamhaus had a glitch overnight (Friday to Saturday, August 18-19) starting at about 8:20 pm US central time. The glitch resulted in a bunch of false positive Spamhaus blocklistings. They were accidental and the listings have since been removed. Because of the sheer volume of support tickets received, it sounds as though Spamhaus may not be responding to all of them. Best to watch Linkedin, if possible, for updates.

Here's what Spamhaus posted about this:

NOTIFICATION | CSS Listing Errors | Today, between 1:20 am UTC & 2:20 am UTC, a significant number of listings were incorrectly added to the CSS DNSBL. These listings were purged at approx. 8:30 am UTC. Our engineers are currently investigating the root cause of the issue. We sincerely apologize for any inconvenience this may have caused.

CSS REMOVAL TICKETS | Further to the issue regarding CSS listings this morning, between 01:20 UTC & 02.20 UTC - many users opened removal requests before the listings were purged at 08:20 UTC. If your removal request is related to an incorrectly listed IP address, we have deleted your ticket as the issue is resolved.

If you weren't already aware, CSS listings are a subset of Spamhaus Block List (SBL) listings that are automatically generated based on observation of low reputation mail flowing from a given IP address. 

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