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Re: [Emailcore] Received: header

John Levine <johnl@taugh.com> Wed, 20 January 2021 02:37 UTC

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From: John Levine <johnl@taugh.com>
To: emailcore@ietf.org
Cc: jgh@wizmail.org
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Subject: Re: [Emailcore] Received: header
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In article <0ca0c0c6-632d-62bb-ed98-361ae4424fa7@wizmail.org> you write:
>On 19/01/2021 17:07, Alessandro Vesely wrote:
>> Anyway, this Section deserves a comefrom Section 4.4.  That is, for example:
>> 
>>     For            = CFWS "FOR" FWS ( Path / Mailbox )
>>                    ; Not if multiple recipients, see Section 7.2
>
>Diverging topic, sorry.  Is it strictly needed to shout "FOR" here?

In ABNF, upper and lower case ASCII have always been equivalent. There
is a recent tweak in RFC 7405 to let you make strings case sensitive,
but that of course doesn't apply to anything in 5321 or 5322.

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