On Tue, Mar 19, 2024 at 11:39:29AM +0100, natan via Postfix-users wrote:
> Hi
> I have one question regarding the RFC of the FROM field: in the message
> header.
>
> Is there any restriction that will force the FROM field to be correct
> according to the RFC?
Nothing builtin to Postfix.
> I'm asking because one client "parses e-mails strangely" and his application
> hangs and instead of correcting it, he sends me to block such e-mails using
> Postfix.
A milter can reject message headers using any criteria it chooses.
--
Viktor.
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