AFAICS, you're sending From: =?ISO-8859-1?Q?Dennis_Bj=F6rklund?= <[EMAIL PROTECTED]> which is an instance of the encoding scheme Bruno mentioned. I have never heard that it is only supposed to be used in Subject: ... certainly there are a ton of people besides you who use it in From:. So I think you are legal.
Whether your name is being displayed nicely is a whole 'nother matter. On my machine I see "Dennis Bj-rklund" or "Dennis Bj rklund" depending on which display I look at :-(. I think this is a font issue, but I don't have enough motivation to track it down...
It displays perfectly in Windows :)
Chris
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