You might have better luck emailing the mailops list. On Tue, Dec 3, 2019, 10:06 PM Matthew Pounsett <m...@conundrum.com> wrote:
> > For some reason Gmail has started blocking mailman administrative emails > to someone who's an admin on a list I host. Their SMTP 552 error message > points to <https://support.google.com/mail/?p=BlockedMessage>, which > implies the "problem" is the URLs in the email, but is otherwise completely > unhelpful. > > If anyone here has any pull with Gmail postmasters, could you please > suggest to them that they whitelist messages that are as consistent and > well-known as mailman's admin and moderator messages? > > >