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Re: problem with AOL addresses



* Patrick Kirk (patrick@kirks.net) [030522 08:32]:
> AOL blocks your email if you both these conditions:
> 
> 1. Your are sending via your own smtp server
> and
> 2. Your smtp server does not have a MX record
> 
> AOL is not alone in this - in the UK many acedemic and scientific 
> establishments ahve a similiar rule.

Really?  Is AOL not just checking some list of known dialup/residential
netblocks?  Requiring the existence of MX RRs is just broken, by RFC
2821:

If no MX records are found, but an A RR is found, the A RR is treated as
if it was associated with an implicit MX RR, with a preference of 0,
pointing to that host.

(Section 5, Address Resolution and Mail Handling)

good times,
Vineet
-- 
http://www.doorstop.net/
-- 
"Extremism in the defense of liberty is no vice.
Moderation in the pursuit of justice is no virtue."  -- Barry Goldwater 

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