On 16/03/16 18:52, Glyph wrote:
Over the last few months, twistedmatrix.com <http://twistedmatrix.com>'s mailman installation has been used increasingly frequently to execute denial-of-service attacks against people's mailboxes. This is
My sympathies; this exact problem was the reason we CAPTCHA-ised our install of mailman and have to keep a very close eye on it. It's really a shame there's so little open-source competition in the email sector these days; it all appears to have been hoovered up by Gmail, Office 365 and various spam (sorry - bulk email) providers.
There will be a couple of inconveniences immediately after the transition:
Couple of random thoughts: Does mailgun actually contain a mailman-alike product or are you effectively building one on top of it? Will the mailman-style List-X headers remain? Will the behaviour of the list w.r.t. things like routing of To:/Cc:'ed people change. Good luck with the migration.