https://bz.apache.org/SpamAssassin/show_bug.cgi?id=8202
--- Comment #4 from Sidney Markowitz <sid...@sidney.com> --- Looking at rhw definition of __UNUSABLE_MSGID it looks like it might need yet another exception added for mail sent through outlook.com if outlook is going to rewrite the MSGIDs -- You are receiving this mail because: You are the assignee for the bug.