On Thu, Mar 19, 2015 at 02:18:24PM +0000, Martin Read wrote: > > In practice, every time I've had a bounce warning from the Debian mailing > list server, it's been because my ISP bounced some spam that defeated the > Debian mailing list server's filters. Well, you've been luckier than some. I've had non-spam bounced before. And the bounced e-mail that started this thread wasn't spam either.