> >
> On 2023-11-02, Simon Connah simon.n.con...@protonmail.com wrote: > > > Valid as in conforms to the standard. Although having looked at the > > standard that might be more difficult than originally planned. > > > Yes. Almost nobody actually implements "the standard" as in RFC 2822 > section 3.4.1 (which can contain, for example, non-printable control > characters, and comments), nor is it particularly clear that they > should. So while checking against "the spec" might sound right, it's > highly unlikely that it's what you actually want. Would you really > want to allow: > > (jam today) "chris @ \"home\""@ (Chris's host.)public.example > > for example? And would you be able to do anything with it if you did? As I said in another post it would be interesting to see what broke when you tried to use an esoteric email address in the wild. Maybe when I'm bored :D. Simon.
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