Great Circle Associates List-Managers
(March 1995)
 

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Subject: Re: duplicated posts -- what causes them?
From: today @ di . com (Todd Day)
Date: Tue, 14 Mar 1995 19:12:36 -0800
To: List-Managers @ GreatCircle . COM

>I've been on lists that went through duplication periods, where every post
>came through twice, and now it's happening on one of my lists (all lists in
>question are majordomo run).

I went through the same problem.  Turned out that my Linux system had a
bad implementation of flock, and sendmail was relying on it.  Since it
would take longer than 15 minutes to empty the mail queue once a digest
went out, sendmail would come along and try to deliver the mail again
since the file wasn't properly locked.  I recompiled sendmail with patches
so it wouldn't rely on the broken Linux stuff, and that was the end of
my double digest problem.

Has your mailer system gone through any upgrades?  Has your system software
been upgraded lately?  Either one of these might point to the same sort of
bug, even if your platform isn't Linux.

-todd-


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