I mean, the "first post" thing is hardly a red flag--it could be a throwaway, or just the first time this person had felt the need to ask an SE question.
It's workplace.stackexchange.com, so they aren't necessarily computer literate. It's entirely possible there is a script somewhere the sets the from field, possibly user configurable. A lot of ticket management tools will do something like this, making a change to a task in the software will send out an email from you.
Me too. I think it's made up. Resignation over email? SQL back door email that everyone knows about? Sure.
It's just not a tech guy who knows the details well?
Anyone can send email from anyone, it's how the email protocol works, that bit is not surprising.
Re:Someone forged my resignation letter
by mrsuprawsm on Tuesday May 30, 2017 @06:30AM
(#14444227)
Methods to send email purporting to be from another users account are well known.
(Admittedly, the "SQL" part seems fishy)
> It could’ve been a colleague because I know there is a backdoor way to send emails using someone else’s account via some sort of a SQL database thing. We used to do it as jokes but it was never used for something like this
That in particular is setting off my troll radar.