Hal Huntley wrote:

I get this mailman message about digests a few times a week based on the senddigests cron job. Since we don't do digests on any of our mailing lists, I've ignored it and no one has complained about not receiving messages on any of our lists.

If you don't "do digests" set Digest options -> digestable to No on all your lists, and this problem can't occur. See the FAQ at <http://wiki.list.org/x/hYA9> for how to do this for all lists from the command line.

But in the interest of learning something and reducing the amount of email I may get, I'd like to figure out how to make it go away. I've deleted most of the headers. The text of the traceback is in its entirety.

It's probably a pretty easy fix, I'd guess. I _could_ comment out the cronjob entry for the senddigests, and I'm willing to do that, but it would be more beneficial to learn a bit more of the depths of things.

It's mailman 2.1.5.

Hal Huntley SRI International

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[Maybe pertinent headers:] X-Cron-Env: <SHELL=/bin/sh> X-Cron-Env: <HOME=/usr/lib/mailman> X-Cron-Env: <PATH=/usr/bin:/bin> X-Cron-Env: <LOGNAME=mailman> X-Cron-Env: <USER=mailman> Subject: [Mailman] Cron <mailman@host> /usr/lib/mailman/cron/senddigests X-Mailman-Version: 2.1.5 Precedence: list

[body of message:] Traceback (most recent call last): File "/usr/lib/mailman/cron/senddigests", line 94, in ? main() File "/usr/lib/mailman/cron/senddigests", line 86, in main mlist.send_digest_now() File "/usr/lib/mailman/Mailman/Digester.py", line 60, in send_digest_now ToDigest.send_digests(self, mboxfp) File "/usr/lib/mailman/Mailman/Handlers/ToDigest.py", line 132, in send_digests send_i18n_digests(mlist, mboxfp) File "/usr/lib/mailman/Mailman/Handlers/ToDigest.py", line 225, in send_i18n_digests addresses = getaddresses([oneline(msg.get('from', ''), lcset)]) File "/usr/lib/mailman/Mailman/Handlers/ToDigest.py", line 389, in oneline h = make_header(decode_header(s)) File "/usr/lib/mailman/pythonlib/email/Header.py", line 113, in decode_header raise HeaderParseError email.Errors.HeaderParseError

There is a lists/LISTNAME/digest.mbox file for some LISTNAME that has an invalid (unparseable) RFC2047 encoded From: header.

You need to remove this (and maybe all other) digest.mbox files. If you don't remove it, it will eventually grow until it reaches the list's Digest options -> digest_size_threshhold at which point every post will attempt to send a digest and will encounter this exception, and in Mailman as old as 2.1.5, this will effectively shut down the list.

You might also consider upgrading Mailman. Beginning with 2.1.10, cron/senddigests handled this more gracefully and reported the offenting list name and digest.mbox file. Also, since 2.1.6 or 2.1.7, a defective digest.mbox won't stop list processing.

-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan