Thanks for visiting! Remember that nowadays, (most) blocklists don't really govern deliverability and inbox placement. Want to learn more about email marketing best practices, email technology, and deliverability troubleshooting? Then you'll want to check out my other site, Spam Resource.

Status of rbl.spamhaus.org: NOT A BLOCKING LIST

My friend Mickey Chandler pointed out recently that he's been seeing some unusual bounces that look like this:

Host blacklisted - Found on Realtime Black List server blocklist.address.is.wrong.spamhaus.org
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