On 2020-03-19, Martin Gregorie wrote:
>Doing this in either C or Java should be OK, since I'm only looking to
>stop From: headers being used as attack vectors on a bash script. AFAICR
>Bash only accepts ASCII, so any message whose From: address contains
>anything that isn't ASCII alphanumeric, '@', hyphen, underscore or period
>can be binned.

You will be dropping valid mail if you do this.

We can start with + in the address, but really, we can play this game
all day.

--- SoupGate-Win32 v1.05