It looks like most of the messages to the builds@ list are created without Date: or Message-ID: headers.
These headers are supposed to appear in all messages. Email providers are starting to enforce stricter standards (e.g. GMail now drops emails with duplicated headers that should only appear once), and the builds@ emails may in future be silently dropped. Most email packages have methods to generate the required headers, but unfortunately not all of them add the headers by default. Sebb
