autoresponding to Yahoo DMARC breakage

[johnl at iecc.com (John R. Levine)]

>> The most "sane" out-of-mind response should only be sent *if* the
>> out-of-mind person is named explicitly as a recipient in the RFC822
>> To: header.  Anything To: somelist at somehost does not qualify :)

This highly effective trick was in the procmail example vacation script in 
1991, and doubtless goes back much farther than that.  It's a little 
dismaying to hear that there are still people writing autoresponders who 
don't know about it.

Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly
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