Can't send email with norwegian letters æ, ø and å using evolution-mapi

[has]

Binary package hint: evolution

Regardless of the encoding (UTF8/ISO-8859-15) it is not possible to send an email containing the norwegain letters æ, ø and å. The message just sits in the outbox giving a generic error message : "Error while Sending message. Could not send message."
This works fine with a gMail IMAP account.

I'm using the evolution-mapi and connect to an Exchange 2007 server.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: evolution 2.28.3-0ubuntu8
ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-19-generic x86_64
NonfreeKernelModules: wl
Architecture: amd64
Date: Thu Apr 8 13:55:14 2010
ExecutablePath: /usr/bin/evolution
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.utf8
SourcePackage: evolution

[Gunnarr (gunnar-blakkur)]

I have a same problem with russian letters, i can't create an appointment containing russian letters, because of my exchange server uses KOI8-R as default encoding, but I can't setup KOI8-R as default encoding in evolution, option in preferences actually doesn't change anything