Missing characters in Subject

[André Karlsson]

Hello

I noticed that all messages with one of the characters åäö ÅÄÖ (swedish) in
the subject gets replaced with a capital X.
The name Södretälje becomes SXdertXlje.

The header gives the following info

X-Amavis-Alert: BAD HEADER Non-encoded 8-bit data (char E5 hex) in message
header 'Subject': Subject: Travelpartner - V\345rrus med billig...

I recon there is some kind of settings somewhere that I cant seem to locate


Best Regards André