https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64968
--- Comment #28 from Frédéric Buclin <LpSolit at netscape dot net> --- Maybe is this a coincidence, but all bugmails I found which have a wrong timestamp have something in common. First of all, the offset is *always* the same: -05:30. Then, it seems the problem only happens when the clock is close to :15, :30, :45 or :00, as shown below: Markus Trippelsdorf 2015-04-28 16:14:58 UTC H.J. Lu 2015-04-28 16:19:15 UTC Andreas Schwab 2015-04-28 20:20:10 UTC Christian Eggers 2015-04-29 15:59:49 UTC Jonathan Wakely 2015-04-30 09:14:14 UTC Rainer Emrich 2015-04-30 13:45:19 UTC @Markus: no need to paste the full email header anymore as I'm getting all bugmails myself since last night. Just indicate the bug ID and comment ID (or real timestamp if it's not a new comment), and I will find it. :) @overseers: to be honest, I don't think this is a bug in Bugzilla itself. I would tend to a bug or a bad interaction with the MTA, qmail or sendmail. Is sourceware running some cron job every 15 minutes, which could interact with Bugzilla sending emails at the same time? And depending on which job is run, maybe sendmail/qmail is confused and uses the wrong timezone. No idea why the offset is always -05:30, but this may give sourceware admins some clue.