Re: [Mailman-Users] Multiple identical copies (100s) ad nauseum being sent as daily digest

[JC Dill]

On 11:55 PM 6/24/01, Dan and Robby Grether wrote:
 >Dear Mailman-Users,
 >
 >We are again having the problem of multiple (100s) of emails coming from
 >our mailing list. The regular emailings are working fine, but the vol 17
 >msg 4 of our daily digest is spewing out 100s of copies to those who were
 >subscribed to the daily digest. I have unsubscribe everyone who was
 >subscribed to the daily digest, but the copies keep coming. How can they be
 >stopped? How can this problem be prevented in the future.
 >
 >I would rather not shut down the whole list---again---to stop them.

This has been addressed here, in the archives, many times before.

The reason people who have been unsubscribed still keep receiving the 
messages (this is a BIG tip off that the problem is NOT your "mailing list 
software", BTW) is that Mailman is not the "thing" sending them.This 
also means that shutting down the entire list will also not be successful 
in stopping the problem.  Mailman handed off the message correctly, once, 
to your MTA for delivery.  The problem is in the MTA.

The duplicate messages are being generated from your MTA (sendmail, qmail, 
etc.), which is broken, and believes for some reason, that the message it 
has already successfully sent hasn't really been successfully sent.  The 
MTA will keep on sending it until you clear the offending message from the 
MTA queue.

Similarly, the fix (to prevent this from happening in the future) will be 
found by changing something within your MTA, not Mailman (although, if 
there's HTML in the digest running your incoming email through demime 
before handing it to Mailman will help prevent a messed up digest with 
screwed up HTML from triggering the MTA's bug).  Fixes vary depending on 
the exact problem and the particular MTA.  Keep a copy of the message so 
you have it to show when asked, and then inquire on a list for your 
particular MTA.

jc  (posted and emailied)



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Re: [Mailman-Users] Multiple identical copies (100s) ad nauseum being sent as daily digest

[Chuq Von Rospach]

On Sunday, June 24, 2001, at 11:55 PM, Dan and Robby Grether wrote:

> How can they be stopped? How can this problem be prevented in the 
> future.
>

first thing you need to do is find out where the duplicates are coming 
from. that means going into the logs to find them.

Don't assume mailman's doing it, either. It could also be the MTA 
(sendmail, whatever).

Is this happening to all users? or just users at one site? Because if 
it's the latter, it could be THAT site that's looping, and not your 
fault at all.

you won't know until you go into your logs and find out where the loop 
starts. And we can't do that for you...

There are many possible sources to loops. Until you find it, we can't 
answer your questiosn.


--
Chuq Von Rospach, Internet Gnome 
[<[EMAIL PROTECTED]> = <[EMAIL PROTECTED]> = <[EMAIL PROTECTED]>]
Yes, yes, I've finally finished my home page. Lucky you.

95% of being a net.god is sounding persuasive
and convincing people you know what you're talking about, even when 
you're
making it up as you go along. (chuq von rospach, 1992)



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