> I have a vague recollection of needing to install the debian
> libsasl2-modules package in order to get sieve working. It had
> something to do with no authentication methods being presented.
> libsasl2-modules contained libplain.so, which was all I really cared
> about.
>
> Andy
Thanks a lot, it helped! Thanks to all who tried to find the solution!
Vladi