authentication problems (sieve, imapd)

[Werner R.]

I am using native Kolab2/Gentoo and experience strange authentication problems
with sieveshell and the kolab admin gui.

sieveshell works if I authenticate as manager for a certain user, but  
not if the users authenticate for themself. The following error  
appears in the log:

  Feb  6 22:37:01 memo saslauthd[32142]: Domain/Realm not available.
  Feb  6 22:37:01 memo sieve[27788]: badlogin: memo[127.0.0.1] PLAIN  
authentication failure
  Feb  6 22:37:01 memo perl: No worthy mechs found

If I use the admin gui trying to redirect mail the following error is  
displayed:

  Not currently in TRANSACTION state
  Script was:

  require "fileinto";
  redirect "user at example.com"; keep;

Any hints appreciated.

Currently I haven't Horde installed but I hope the Ingo filtering will
work.

  Werner