> On 11. Jun 2020, at 20.22, Ralph Seichter <ra...@ml.seichter.de> wrote:
>
> * Sami Ketola:
>
>> They do not rely on Date header. Date header is not mandatory and also
>> it's not written on server side. It is written by the sender.
>
> Could you please elaborate on "Date header is not mandatory"? As far as
> the message format goes, "Date" and "From" are actually the two required
> headers in every message (see RFC 5322), so I am not quite sure what you
> mean?
You are right. It seems to be mandated by RFC 5322. However you can't trust
that it is present as there is quite many messages being sent that don't have
it.
Sami
