Spam Resource: All Things Deliverability

A few different folks have reported to me that when accessing Google Postmaster Tools , they were seeing this message being displayed instead of data: No data to display at this time. Please come back later. Postmaster Tools requires that your domain satisfies certain criteria …

Every so often somebody approaches me to ask me if B2B spam is OK now, because they get B2B spam at their work address. Everybody gets it, they presume, thus it must now be acceptable. Or it was always acceptable and those deliverability guys were just trying to mislead them be…

I'm blocking all mail from the new .top TLD , because I'm getting absolutely pummeled with spam from a spammer or small group of spammers rotating through .top domains, trying to hide who they really are. You might want to avoid the .top TLD for email purposes right now…

(A very old CBL logo.) Click on over to ArsTechnica if you want to learn more about the specifics of this particular spamming botnet army . The interesting bit (for me, anyway) is that the infected machines monitored the Spamhaus CBL blacklist and would request removal if foun…

In addition to the blacklists we all know and respect, Spamhaus maintains two other special lists: The  DROP (Don't Route Or Peer) and EDROP (Extended Don't Route Or Peer)  lists. These are lists of IP addresses and/or netblocks of the worst of the worst -- networks tha…