[Engineering] Bug reports about on-wiki email not being delivered

[Andre Klapper]

We have a bunch of recent bug reports about on-wiki email
(Special:EmailUser) on Wikimedia sites not being delivered:

* https://phabricator.wikimedia.org/T130723
* https://phabricator.wikimedia.org/T134886
* https://phabricator.wikimedia.org/T136468
* https://phabricator.wikimedia.org/T137337

I don't know if all affected users face the same underlying reasons
(SPF policy of freemailers? BounceHandler extension? Something else?),
hence some investigation would be very welcome here.

Thanks,
andre
-- 
Andre Klapper | Wikimedia Bugwrangler
http://blogs.gnome.org/aklapper/