the authors of RFC 2317 have a question for at&t worldnet

Thu Feb 1 18:05:44 UTC 2007

I'm not from AT&T, but that page contains three errors and three "What to do" 
sections. The section referring to RFC 2317 is for DNS errors:

“550 Error. Blocked for status: <unknown sender>”: This error indicates that no 
identifying information has been entered into the DNS (Domain Name System) for 
this sending system. The AT&T Worldnet mail system, like many others, does not 
accept messages from mail systems with no DNS records.

The "Spam complaint" section has a different "What to do:"

What to do: Ask the administrator of your mail system to contact us through our 
System Administrators' page  and provide the information we need to investigate 
the problem.

Paul Vixie wrote:
 >   What to do: Ask your system administrator to submit identifying information
 >   to the DNS. For more information, your administrator should refer to
 >   http://www.faqs.org/rfcs/rfc2317.html In the meantime, you should use a
 >   fully registered domain for sending your messages, such as the mail system
 >   from an ISP or one of the major free e-mail services.
 >
 > now, i count myself as a master of the obscure reference, but this is over
 > the top.  can someone from at&t worldnet please contact me for the purpose
 > of explaining what RFC 2317 could possibly have to do with spam complaints?