Jonas wrote:

We use a exchange 2003 server and I have notice that my outlook 2003
client behaves strange if the From tag in the header looks like this;
From: “”

There's nothing syntactically wrong with this. It is a perfectly valid From
header.

I’ve hooked up Thunderbird and it shows the From field as I think it
should, instead of a blank from field it shows

What Thunderbird shows has no bearing on it at all. Whoever sent the
message wanted a blank "From" name nd that what s/he sent, apparently.
Outlook uses the value in quotes, if they exist, as the string that shows in
its From field. It's the way Outlook is designed to work.

If the header looks like this; From:

In this case, there is no friendly name, so Outlook shows the mail address,
probably enclosed in apostrophes, like '.

or like this; From: “name”

And, in this case, Outlook will show the From field as "Name". Since the
first example contained nothing between the quotes, that's what Outlook will
show.
--
Brian Tillman