On many (but not all) of my incoming email messages, I see a message saying:
This email is from an external mail server, be judicious when opening attachments or link
My mail server is - unfortunately - outlook.office365.com . I'm thinking it might be the culprit rather than my correspondents themselves, although I can't quite tell.
Anyway, this is super annoying, and basically meaningless. I mean, of course most email comes from an "external mail server" - not everyone on the planet uses the same server after all.
- Why am I even getting these notices?
- Other than "scrub" them ex-post-facto from the displayed message (e.g. with a Thunderbird extension) - is there something I can do to avoid getting them?