After upgrading OpenSuse 11.1 to 11.2, we got the TB3beta4 (which seems to be the source of many issues, thank you Novell for pushing this on your users) :-(

As a result I can no longer send emails.
I will give a translation of the error message (I get it in Dutch) :

Sending of the message failed.
An error occured during the sending of the email : unable to authenticate at the SMPTP server <name of smtp server here>.
It does not support authentication (SMTP-AUTH), but you have chosen to use authentication.
Uncheck "username and password" for this server or contact the service provider.

It is obvious that this authentication is needed on the SMTP server, just checked on another PC where this still works. So it is for sure OpenSuse11.2/TB3beta4 which are causing this error.

Any suggestions, fixes , ... ?

many thanks.