Re: Last Call: draft-klensin-rfc2821bis

[Keith Moore <[e-mail]>]

> 
> So, a domain name erroneously appears in an address field and the references 
> host erroneously accepts mail it shouldn't.
> 
> This degree of problematic operation is not likely to get solved with a new DNS 
> construct.

this specific problem will get solved with a simplification of how email 
uses DNS.

> If someone is sending out invalid email addresses, then that needs to get fixed, 
> rather than working on some post-hoc mechanism.

the two problems are not mutually exclusive.  but we can lessen their 
combined effects.

>> Thus, disabling AAAA checking seems to provide much cleaner error  
>> behavior. 
> 
> Reasonable idea.
> 
> Let's do it for all Internet services, not just email.

worth considering.  but for now only 2821bis is on the table.
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