Mail thinks everything on one act is junk

[Chupa Chupa]

I have multiple accounts on Mail (v10.2). One in particular (a Gmail acct) I recently changed from POP to IMAP. Since then everything from that account goes directly to the Junk folder. For a couple months now I've done a select-all and hit the "not junk" button hoping Mail would learn this mail isn't junk. No dice.

This is only happing on this one account -- I have other Gmail accts that are IMAP. Any ideas to get mail to understand this mail is not spam?

 

[BrianBaughn]

Mail moves it to the Junk folder or does it happen at Gmail?

BTW I've never liked using junk mail filtering in Mail as my email hosts do a better job of filtering.