Compose Address Autocomplete Blacklist ?

[linuxbox]

Hi,

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 mailinglistname-bounces@domain.com. Many users are accidentally posting to these email addresses instead of the correct mailinglistname@domain.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.

Brook