Re: ECN: Volunteers needed

[Gregory Maxwell]

On Wed, May 09, 2001 at 01:08:31PM -0400, God wrote:
> On Wed, 9 May 2001, Gregory Maxwell wrote:
> 
> > 2) They certainly are.  Every once in a while they go through a period of
> >    silently dropping all email coming from hosts that don't have PTRs.
> >    This would be no worse.
> 
> ACK .... Which do you mean? :
> 
> -Hosts that don't have valid PTRs (which would be no PTR at all -- Not
> deliverable, but not because AOL said so)
> 
> -Hosts that don't have valid PTRs, but DO have at least one valid MX
> (Forward and reverse)
> 
> -Same as above, but said hosts MX's forward and/or reverse don't match
> 
> etc etc ....   I ask this simply because I DO know of users who have
> complained their E-Mail to/from an AOL customer, didn't get there.  I've
> always assumed .. well ... AOL user .. no comment :)

AFIK, mail which contains Path with host names which don't pass a two-way
check (forward, reverse the forward) AOL drops. Not always though, MX
records are irrelevantly.