Encoding problem when sending mail over Linux server

Hello,

we have this unpleasant problem when sending mail over a Linux host:

the message arrives with this content-type:

Content-Type: text/plain; charset=UTF-8

But special characters as the German umlauts do not display right. When you (manually) change the encoding in the receiving mail client to ISO8859-1, all characters display fine.

So it seems that the encoding is actually set to ISO8859-1, but in the header the wrong content type is set.

Looking at the code of the mail plugin, I see that no encoding is set by Servoy but the Java Mail API. So maybe there is a problem on Linux with that?

Any ideas are greatly appreciated!

Thanks
Patrick