On Fri, 2025-03-21 at 09:08 +1100, Stephen Morris wrote:
> When sensitivity levels are set on a mail, the mail client adds
> headers into the header list to specify the sensitivity level
> specified (Private, confidential, organisation-confidential). The
> setting of organisation-confidential is the same as confidential but
> meets the requirements of RFC 256 (I think it was that, I need to
> look up the documentation again for the environment I develop in at
> work to see exactly what RFC it is for).
> > I suspect it's merely a label and application-specific. The moment you
> > email someone without the requisite software it's going to get ignored.
> Organisations, if they so desire, can put processes in place to
> handle mails with headers specifying sensitivity differently to mails
> that don't have the headers. In fact, I'm trying to get a defect
> resolved at the moment where somewhere between the code I wrote to
> send the mail and the mail arriving in Outlook 365, the sensitivity
> level in the headers has been changed.
Big oops, I missed it. In the message editor for new message or
replies (on my old CentOS 7 installation)
Insert menu
blah blah
blah blah
Custom header
blah blah
blah blah
And a slightly different position in the Insert menu on my Fedora 40
installation, so I suspect it's still there in newer releases.
Click on the custom header menu item, and a window pops up
Email Custom Header
Security Personal
Unclassified
Protected
Confidential
Secret
Top Secret
None
On a whim, I picked "unclassified" for this reply, to see what it does,
and if it makes it through the list server.
--
uname -rsvp
Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
Boilerplate: All unexpected mail to my mailbox is automatically deleted.
I will only get to see the messages that are posted to the mailing list.
--
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