please help to enable sieve

[JOYDEEP]

Dear list,

this is my first ever mail to the cyrus group. Hope to get some help.

I am using cyrus-imapd-2.2.12-27.6 in Suse 10.1 I have configured cyrus
to work with LDAP authentication where
the admin user "cyrus" is based on simple pam authentication. So I have
both PAM_Unix and PAM_ldap module
in my system and configured accordingly.

I have no problem to login as cyrus ( to do admin work)  as well as I
can also log in as an user based in LDAP database.
I am using egroupware and felamimail is my webinterface for cyrus. I can
send and received email.

But I can't use the seiev. whenever I try to use; it gives error like
=================================================
Mar 19 12:44:36 linux master[21414]: about to exec
/usr/lib/cyrus/bin/timsieved
Mar 19 12:44:36 linux sieve[21414]: executed
Mar 19 12:44:36 linux sieve[21414]: accepted connection
Mar 19 12:44:36 linux saslauthd[4894]: pam_warn(sieve:auth):
function=[pam_sm_authenticate] service=[sieve] terminal=[<unknown>]
user=[aftab] ruser=[<unknown>] rhost=[<unknown>]
Mar 19 12:44:36 linux saslauthd[4894]: DEBUG: auth_pam: pam_authenticate
failed: Authentication failure
Mar 19 12:44:36 linux saslauthd[4894]: do_auth         : auth failure:
[user=aftab] [service=sieve] [realm=kolkatainfoservices.in] [mech=pam]
[reason=PAM auth error]
Mar 19 12:44:36 linux sieve[21414]: Password verification failed
Mar 19 12:44:36 linux sieve[21414]: badlogin:
linux.kolkatainfoservices.in[127.0.0.1] PLAIN authentication failure
=====================================================================


here is my /etc/imapd.conf
==============================================================
configdirectory: /var/lib/imap
partition-default: /var/spool/imap
sievedir: /var/lib/sieve
admins: cyrus
allowplaintext: yes
sasl_mech_list: LOGIN PLAIN
allowanonymouslogin: no
autocreatequota: 10000
reject8bit: no
quotawarn: 90
timeout: 30
poptimeout: 10
dracinterval: 0
drachost: localhost
sasl_pwcheck_method: saslauthd
servername:linux.kolkatainfoservices.in
lmtp_overquota_perm_failure: no
lmtp_downcase_rcpt: yes
unixhierarchysep:  yes
loginrealms:   kolkatainfoservices.in
hashimapspool: true
lmtpsocket:  /var/lib/imap/socket/lmtp
==============================