> From: David F. Skoll [mailto:[EMAIL PROTECTED]
> Do you whitelist replies from out-of-office software?
> 
> > It is reasonable to assume that if one of my users sends 
> someone mail, then
> > they want a reply.
> 
> Unless the outbound mail is sent by an auto-responder, or by 
> an unsophisticated
> user.

This gives me a crazy idea.  It seems like it would be nice to have an
extension to the SMTP protocol to give out-of-office notification at RCPT TO
time.  That would eliminate the need for out-of-office-replies altogether.

Something like
sending-mta.example.com sending email to receiving-mta.example.org
<<< Banner ESMTP receiving-mta.example.org
>>> HELO sending-mta.example.com
<<< 200 OK
>>> MAIL FROM: <[EMAIL PROTECTED]>
<<< 200 OK
>>> RCPT TO: <[EMAIL PROTECTED]>
<<< 200 OK
>>> RCPT TO: <[EMAIL PROTECTED]>
<<< 500 Don't know any fred, sorry
>>> RCPT TO: <[EMAIL PROTECTED]>
<<< 400 ellen's mailbox is full, try again later
and now the proposed extension:
>>> RCPT TO: <[EMAIL PROTECTED]>
<<< 2xx: OK, but mary's out-of-office until mm/dd/yy if it's urgent ask
[EMAIL PROTECTED]

Compliant sending MTAs could construct their own out-of-office message back
to the sender including the alert message (which would have to be short)

[EMAIL PROTECTED]                      805.964.4554 x902
Hispanic Business Inc./HireDiversity.com         Software Engineer
perl -e"map{y/a-z/l-za-k/;print}shift" "Jjhi pcdiwtg Ptga wprztg,"
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