Outlook moves safe email to junk folder
I use Outlook 2007 and starting last fall a weekly email that I have been receiving for 5+ years with that has Word and PDF files attached started being moved to the junk folder. The Safe Sender list and the Safe Recipients list has the senders_user_name@domain_name listed as well as the @domain_name. The sender uses a distribution list that is also listed in the Safe Recipients list. Each week I have to find it in the junk folder, right click & select junk mail, not junk mail, and click on the box to add the distribution list to the Safe Recipients list.
The only thing that might be a lead or a false lead it about the same time the sender upgraded their Word and the file type changed from .doc to docx
What is going on? How do I fix it.