I use Outlook 2007 as email client and IMAP rather than POP with a gmail account.
When I select some emails to read in my Inbox they are auto-deleted from my Inbox and transferred to my Junk Mail box. Many of these emails are not from suspect senders while some of those that should suspect are not filtered.
I have not set any filters for Junk Mail but when this happens, I select the email and mark as Not Spam for future.
This problem was not happening with this same email client & gmail account when I used POP.
What is causing this and how can it be stopped from deleting them from my Inbox?