We have an ongoing issue which I hope someone can assist with. We have mailing lists which several users are on that have reply-to addresses in the form of firstname.lastname@example.org. Many users are accidentally posting to these email addresses instead of the correct email@example.com address because auto-complete is pulling the "bounces" address into the autocomplete list from a previous message and users aren't looking closely.
Is there a way anyone could think of to blacklist, or permanently remove, specific, or better yet some regex, of email addresses that should never populate the autocomplete for any user?
I searched around a good bit, so apologies if this has been covered elsewhere, but I would appreciate a point in the right direction. Thanks in advance for any and all suggestions.