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Allowing non-quoted "." and "," in display-name?

2005-11-30 11:09:11

I just received an e-mail which had the following headers (excerpted):

    Received: from ([]) by with Microsoft SMTPSVC(6.0.3790.1830);
        Tue, 29 Nov 2005 10:14:09 +0100
    X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0
    From: =?iso-8859-1?Q?H=E4ggstr=F6m=2C_Daniel?=

After MIME decoding, the From: field of this e-mail looks like this:

    From: Häggström, Daniel 

This causes my mail program (Macintosh Eudora) to go wild,
believing that "Höggström" and "Daniel" are two different
people and trying to send my reply to both of them.

The way I understand it from RFC 2822, it is the sending mail program
(Microsoft Exchange V6.5.7226.0) which is faulty, since the
From: field should have been:

    From: "Häggström, Daniel" 

RFC 2822 allows "." without quotes as "obs-phrase" i.e. something
you should receive but not produce. Is "," also going to be
accepted without quotes in the future?
Professor Jacob Palme <jpalme(_at_)dsv(_dot_)su(_dot_)se> (Stockholm University 
and KTH)
for more info see URL:

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