Mail from WMF mailing lists is sent with an apparent envelope sender of for example wikide-l-bounces@lists.wikimedia.org. However, lists.wikimedia.org doesn't have an SPF record in contrast to wikimedia.org. It seems as if the non-existence of the SPF record might cause some mail services like Google Mail to treat those mails as spam by default.
Version: unspecified
Severity: major
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=52569
https://bugzilla.wikimedia.org/show_bug.cgi?id=52915