Rusty Newton wrote:
Mailman version 2.1.11 Pipermail 0.09 (Mailman edition)
And whose package?
See the FAQ at <http://wiki.list.org/x/OIDD>.
Has anyone seen this before?
Yes
Example of the issue: http://lists.digium.com/pipermail/asterisk-users/2012-September/thread.html
This appears to be a manifestation of a problem caused by a bad Debian/Ubuntu patch. See <http://mail.python.org/pipermail/mailman-users/2010-April/069328.html>.
The underlying bug reported at <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=167758> was fixed in GNU Mailman 2.1.13 in a way that doesn't break threading, and the Debian patch is not in any current Debian packages.
I don't know how this happened if you didn't do anything. Perhaps it was just unreported.
Assuming this is caused by the bad Debian patch, I think in order to fix it, you need to remove the bad patch, fix a few problems in archives/private/asterisk-users.mbox/asterisk-users.mbox and run bin/arch --wipe asterisk-users.
The problems I see are incorrect dates (May 2016 instead of Sep 2006) in the From_ separator of those posts indexed at <http://lists.digium.com/pipermail/asterisk-users/2016-May/thread.html>.
Note that there is a possibility that running bin/arch --wipe could alter some or many message numbers, thus invalidating any saved URLs to messages.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan