I stumbled upon a problem with our phplist installation (currently 3.2.7, update is already scheduled):
Our latest newsletter was sent to blacklisted users!
For several users, I see a green thumbs up when browsing through the recipient list, and a red thumbs down when I search for those users.
I see no significant difference in the user details, yet some of them receive mails, others not.
Does anybody have any idea on where to look?