Client is using Outlook 2013, with SBS2011 (Exchange 2010) Latest SP and patches applied.
cleint has recently been stating that internal emails are going to the junk mail folder. I observed the same.
Actions I have taken- Verify that the internal domain is on the safe sender list, created rule in Hub Transport to force -1 SCL on all internal email.
Turned Outlook Junk Mail filter off.
Booted Outlook with /cleanrules
Booted Outlook with /safemode
I can move the email from the junk mail folder to the inbox and within 2-3 minutes the email will automatically move back to the junk mail folder.