Comment 3 for bug 1745512

Strange that the mailspike lookup form claims "worst possible reputation" when Talos (formerly Senderbase) isn't indicating presence on any widely-used blacklists: https://talosintelligence.com/reputation_center/lookup?search=ask.openstack.org

The current SPF record for openstack.org is "v=spf1 include:sendgrid.net a:review.openstack.org a:mail.zendesk.com include:emailsrvr.com include:e2ma.net ?all" so unless we're going to set the sender to something @ask.openstack.org we should probably add a:ask.openstack.org in there. That said, I can't imagine a blacklist adding hosts solely for sending messages with an address which isn't included in a ?all SPF record. I'll see if I can spot any nefarious use from the MTA logs.