The initial HOWTO was perfect 10.2 suse server but I just adjusted to add Dovecot, roundcube, SSl and Amavis/Clamd. After a while I udated to 11.2 openSUSE, for thre years works fine but, after a system update the problem began. I did not paid attention because I use a webmail URL. Now I do have to manage more than four email accounts and It is impossible to continuing using webmail and switch to Claws Mail in openSUSE 11.3 desktop.
Unfortunately I am not able to configure the sending option. I guess something change in the main.cfg file