Outgoing msg header problem

A

Astrid

Having recently switched to Outlook 2003 for my mail, I
can't send mail to certain mailing lists (they bounce)...
msgs to private receipients appear to arrive ok.

Contact with my ISP reveals "This can be caused by a
malformed header in the message you are trying to send."

Checking in Outlook > any outgoing msg > right click >
Options, I find that the 'Internet headers' of all my
outgoing msgs are blank. Could that be the problem?

Does anyone know how to solve this?
Thanks, Astrid
 
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