I rather like dnsbl.test. What's the reason for including a dot?
Leaving the dot out reduces the probability (for the most part) with
colliding with a innocuous link.
RFC 3330 says there'll never be a "test" TLD. It makes no promises
about a "dnsbltest" TLD, although I agree it's pretty unlikely.
Doug's suggestion (inserting underscores) is both good and bad for the
same reason. Underscores are illegal in DNS names, hence a good idea.
But, if they're illegal, the test wouldn't work either.
Actually, they're legal in DNS names, just not in host names. That's
why SRV records and DKIM use _foo components, to be sure they can't
accidentally collide with host names. For once, I agree with Doug's
suggestion.
R's,
John
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