Outlook "Safe Lists Only" Occasionally Fails to Block

Question

I'm not getting any help at answers.microsoft.com [see http://answers.microsoft.com/en-us/office/forum/office_2013_release-outlook/outlook-safe-lists-only-suddenly-fails-to-block/60453019-acd6-45a1-b426-fe44e998e1b2?tm=1406134845058], so I thought I'd try
here:
Recently, beginning in July 2014, occasional spam has started leaking through my Safe-Lists-Only junk email filter and appearing in my Inbox in Outlook 2013 (Click-and-Run Office OEM installation on a new Lenovo W530, no Exchange or other server, just a
stand-alone POP3-email-only installation on a single computer under Windows 7 SP1).  These senders are not in my Contacts, Safe Senders, or Safe Recipients lists.  Below is the header from the most recent example [with my e-mail address edited out].
(More can be found in the above-quoted thread.)
Further, although right-click/Junk/Block Sender does move these messages to the Junk folder, it does **not** add their addresses to the Blocked Senders list.
On the other hand, legitimate e-mail from senders not yet in my Contacts **do** get routed to the Junk folder, until I mark them as Not Junk, as they should.  Thus the filter basically appears to be working.
I have Microsoft Updates set to Automatic, I have MSE installed and up to date, and I occasionally do a deep scan with both MSE and MalwareBytes, but no malware has been found.  It appears that some of the "bad guys" have figured out a way
to kid Outlook 2013 into thinking that their messages are on one of my Safe Lists.  Has anybody else seen this behavior?  Any suggestions how to fix it? -- JCW2
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Answer 1

If you have setup multiple accounts in Outlook, please configure the Junk E-mail Options separately for each account.
I actually read another thread from you in this link below...
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.
Melon Chen -- Thanks for taking an interest in my problem.  It's early to be sure yet, but the change that you suggest was made yesterday, as indicated in that other thread you mentioned, and does seem to be helping:
1) Checking my short list of previous illegitimate spam messages (that went to my Inbox), I see that they are all from one of my non-default accounts for which the Junk options turned out not to have been configured.
2) Having configured all my accounts to "Safe Lists Only," I received one more similar message this morning that DID go into the Junk folder!  Maybe this was indeed the problem.
3) I haven't tried OffCAT yet, but I will read about it... -- JCW2