Then the registrars started offering 1st year registration at $0.99/year and all the spammers jumped aboard.
Came to a point where .info was the equivalent of .spam
At least if you buy a traditional ccTLD like .ca , or a regular TLD in .com , .net , whatever, you can expect pricing to remain consistent.
Otherwise, after sufficiently ruining .fun, I'm sure the spam crowd will just move on to the next cheap TLD until that one gets saturated and so on.
If I control the rDNS for a public IP I can set it to anything I want. Of course if I want any chance at all for mail delivery the rDNS for the smtpd needs to be the same as its 'forward' DNS name and name in the MX records.
But you're much better blocking by IP RBL (ex: many /16 to /18 sized blocks of taiwanese DSL ISPs are blocked in all the major RBLs), using tools like spamassassin on your incoming smtpd, opendkim integrated with your smtpd for incoming DKIM verification, and generally filtering by content.
I mailed NameCheap multiple times about this, they keep telling me they cannot do anything about it.
.bid seems to be 35% bad which is not all that bad if they have been offering $1 domains for long. So maybe they take some actions through the registrars to stay bellow being presumed spam by default or maybe not enough of these unique domains are getting reported..
The hoops to send have existed for a long time and simply evolve. A push protocol without trust is a pretty bad idea after all.. So bad the fax machine needed the legal system to inflict severe punishments for the physical resources consumed by unwanted push (in theory if not practice.)