Great Circle Associates Majordomo-Workers
(November 1996)
 

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Subject: Re: Return Loops
From: Evan Champion <evanc @ synapse . net>
Date: Sun, 10 Nov 1996 10:11:54 -0500 (EST)
To: Brock Rozen <brozen @ webdreams . com>
Cc: Jason L Tibbitts III <tibbs @ hpc . uh . edu>, majordomo-workers @ greatcircle . com
In-reply-to: <Pine.OSF.3.95.961110094841.11893A-100000@webdreams.com>

On Sun, 10 Nov 1996, Brock Rozen wrote:

> I suggested something of the sort, just not on a per user level, rather
> per list level. Regardless, Jason said that the overhead would be too
> great and that people (who?) are already complaining about that.

The overhead is rather large when you're hit by 43000 help messages from 
the same guy over a 3 day period...  And that isn't an isolated 
occurance.  Since yesterday when I started ignoring mail from 
postmaster/mailer-daemon, I have stopped 117 mail loops originating from 
34 unique e-mail addresses.  That's pretty good for a simple pattern 
match check.
 
> The message-id one probably wouldn't add too much overhead and might solve
> somebody's problems. I also can't imagine anybody objecting to it(except
> for overhead). 

I can't even see an overhead issue.  Implement it as a dbm file and the 
access time will be very fast.  Have it configurable, and then people who 
don't have access to the PERL db*() functions can just turn it off.

If you implement any of these things using dbm's the access overhead will 
be minimal.  A message ID, a "banned users" list and a number of mails 
from a particular user restriction would solve just about every possible 
problem situation.

Evan
--
Evan Champion            * Director, Network Operations
mailto:evanc@synapse.net * Directeur, Exploitation du reseau
http://www.synapse.net/  * Synapse Internet



References:
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From: Jason L Tibbitts III <tibbs@hpc.uh.edu>
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From: Brock Rozen <brozen@webdreams.com>
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From: Jason L Tibbitts III <tibbs@hpc.uh.edu>

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