Re: current usage of AAAA implicit MX?

I think I didn't explain myself very well... I didn't mean to say that 
these three address verifiers are quality software, correct, or 
anything like that.
The original message asked for current usage of AAAA implicit MX. The 
answer is "top three search results don't" for one type of email 
address processing software. What that type is important or not is a 
value judgment.
Arnt