We have large issues with received and sent mails in html. When replying to a received html mail all international chars is replaced with ?. The same goes for html mails where the user first write the mail and then use the address book. Our users are up in arms over this so i must fix this ASAP. Anyone else having this problem or is it a configuration issue? Its not a browser encoding issue thats for sure.

Any replies is nice since ive completely exhausted any possible remedies and my users will have my head on a plate soon.