Great Circle Associates Majordomo-Workers
(November 1995)

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Subject: Re: Subscription Confirmations
From: ckk @ uchicago . edu
Date: Tue, 28 Nov 1995 14:32:22 -0600
To: majordomo-workers @ greatcircle . com
In-reply-to: Your message of "Tue, 28 Nov 1995 10:45:48 EST." <>
Reply-to: ckk @ uchicago . edu

In message <>, Al Gilman writes:
>Do people have experience with using a dedicated mailbox for such
>transactions?  Like "forward this message just as you got it to
>majordomo-undo@... to cancel this transaction.  If you have any
>questions about what is going on, send any message at all to
>GarbageDelivery-request@...  for further instructions."

Actually, now sendmail 8.7.X (latest is 8.7.2) has a feature where you can 
send to addresses like "user+a@host" or "user+b@host" and the extra string 
after the "+" can be used in filtering. The good old Andrew Message System has 
had this wonderful feature since 1985. (in the sendmail version, the extra 
string is handed to the local delivery agent i.e. procmail as an additional 

So one could setup a facility where your request mail to majordomo could 
actually be to majordomo+listname, or maybe majordomo could have me confirm my 
subscription request, made initially from myusername@myhost, by setting the 
Reply-To: address, on its confirmation request, to majordomo+myusername etc.

Chris Koenigsberg

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