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Occassionally I get the same email message coming to a list. Sometimes t= his is because people with broken MUAs (like Outlook) do a "group reply" an= d it puts the list address in twice, and sometimes it's a mail server hiccu= p. In order to prevent that, I run the mailing list through procmail as sho= wn in the previous FAQ entry. Near the top of my procmail recipe file, I pu= t the following code:
The first bit keeps a message id cache of the last 8192 message ids reci= eved on the list, and the second bit deletes any messages whose message id = matches one in the cache.
If you run more than one email list through the same procmail recipe fil= e, be sure and use a different msgid.cache file for each list, possibly by = calling it /tmp/msgid.cache.$
If you don't, people won't be able to send a message to two of your mail=
ing lists at a time. That may be desirable to you.
Last changed on Fri Jan 25 00:22:17 2008 by jidanni
Converted from the Mailman FAQ Wizard
This is one of many Frequently Asked Q= uestions.------=_Part_17898_1575692077.1369385062937--