[Dovecot] AntiSpam Plugin

[Leander S.]

 I'm getting Errors in Thunderbird, when using the antispam plugin:
[SERVERBUG] failed to send email


What am I doing wrong? there isn't that much to configure? I'm using 
Dovecot version 1.2.12.
Does anyone know about that bug aswell, cause google research showed me 
that it might be a common bug?!



Regards