So, Frame 12 (which I'm still having to use for a particular HTML Help project, as it screws up the graphics in Frame 2015 and Frame 2017 and so far Adobe haven't responded with any solution, even though I sent them the project as requested....) crashed this morning with an Internal Error when I spell checked. And as prompted, I dutifully sent the log file to firstname.lastname@example.org ...
and I got this bounce message >>>>>>>>>>>>>>>>>>>>>>
Delivery has failed to these recipients or distribution lists:
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
#< #5.7.124 smtp;550 5.7.124 RESOLVER.RST.RestrictedToGroupPermission; not authorized to send to the distribution list because the distribution list is set up to accept mail from list members only, or specific recipients only> #SMTP#
Original message headers:..............................
That means, that is is a whole list of recipients with their one personal email address, but that special one "ORG-KSAINI-DIRECT@adobe.com" doesn't exist any more, but all the others still receive this email.
Maybe this person or department is gone, but the others still exist.