I replied to a user on gluster-users with the subject "Re: [Gluster-users] file shred". It did not get delivered. I also sent an email about it to the infra mailing list, I don't think that got delivered as well. Nigel found that there are some DNS issues. Raising a bug for the problem.
THere's a long mailq due to some of our subscribers' mailservers giving us timeouts.
This was due to bug 1494280. Michael helped restart rsyslog which fixed the issue. Keeping the bug open until we see the actual email trickle in.
The email has now arrived. Closing this bug as resolved.