spf-discuss
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Re: bugs in rfc2821

2004-01-22 11:35:43
Meng Weng Wong wrote:
I consider this a bug in 2821.  I don't know the reasoning that went
into it but I think that text needs to change.

FYI

http://cr.yp.to/smtp/helo.html

"A few servers reject messages from clients whose HELO parameters do not match the results of PTR lookups on their IP addresses. This behavior is a disaster in practice; surveys in 1998 found that more than 10% of all clients by volume use invalid HELO parameters. Compuserve reportedly uses unqualified names:

     HELO NIH2WAAF

RFC 1123 prohibits HELO-based rejections."

Internet surveys:
http://cr.yp.to/surveys.html


z2

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