Does anyone have a list of all of the domains using cloudmark? If not all of them, then as many as possible. Thanks in advance.
Nothing difinitive, but it depends on what domains you're mailing. What I mean by this, is do you care there are possibly 1000 or more GI domains using it or are you more interested in the TLD/BB/Cable domains? If this is the case, you're looking at anywhere between 10-20 depending on who you ask and whether or not it's a good "guess" or a validated domain.
Not interested in the big domains, I was more curious how many GI domains are blocking based on Cloudmark's IP blacklist.