Spam Resource: All Things Deliverability

Multiple folks reached out to me overnight to let me know that the SpamCannibal DNSBL has blown up, that they have effectively "listed the world," resulting in mail admins blocking all mail if they use this DNSBL in their mail server configuration . I talked to the o…

Remember how Outlook had that horrible "Recall" function that didn't work because anybody with a brain could just force quit Outlook to prevent it from deleting the original message? This has nothing to do with that. If you still use Outlook (I don't) and if t…

Looks like the anti-spam blacklist at dnsbl.cyberlogic.net has listed the entire world. More info can be found here .

And that's not even all of them.

As AOL and Yahoo continue their transition into one platform, things were bound to change over time. As a result of this ongoing consolidation, AOL no longer offers whitelisting of sending IP addresses. Though the form still seems to be up at the moment, any submissions seem to…

As mentioned on Slashdot, TechCrunch is reporting that unsubscription service Unroll.me is saying that EU users are no longer welcome, claiming that it's not possible to comply with GDPR.

Even though the Vodafone Ireland domain vodafone.ie has six active MX records , this appears to be a dead email domain, and I suggest you suppress all vodafone.ie addresses from any email lists. Vodafone appears to have announced this closure in 2014. The original announcemen…