Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable X-RT-Original-Encoding: iso-8859-1 Content-Length: 414 I got following message when I send a copy of my respons to receivers at andrew.cmu.edu reason: 554 5.6.0 Message contains non-ASCII characters in headers. But I can not see the characters. Kind regards! Göran Hjorth I have still the same problem. Registry value HKCU\Software\MIT\Kerberos5 does not still exist. I have also shut down Zone Alarm Pro without different result. Kind Regards! Göran Hjorth