How to reset IMAP password

[Qaiser Adams]

Folks,
We have lost our IMAP password and cannot find a way to reset it - does
anybody know how we can do this?
We are running Cyrus with saslauthd and using OpenLDAP to authenticate our
users - this is the error I'm getting:
---------
cyradm -u cyrus localhost
IMAP Password:
              Login failed: authentication failure at
/usr/lib/perl5/site_perl/5.8.5/i386-linux-thread-multi/Cyrus/IMAP/Admin.pm
line 118
cyradm: cannot authenticate to server with  as cyrus
----------------

I have tried changing the password of the 'cyrus' user using passwd,
saslpasswd and saslpasswd2 to no avail, and also tried using 'cyradm --user
cyrus --auth PLAIN localhost'
but it always asks for the IMAP password.
Many thanks,
Qaiser


---------  */etc/imapd.conf* --------
configdirectory: /var/lib/imap
partition-default: /var/spool/imap
admins: cyrus
sievedir: /var/lib/imap/sieve
sendmail: /usr/sbin/sendmail
hashimapspool: true
sasl_pwcheck_method: saslauthd
sasl_mech_list: PLAIN LOGIN
tls_cert_file: /usr/share/ssl/certs/cyrus-imapd.pem
tls_key_file: /usr/share/ssl/certs/cyrus-imapd.pem
tls_ca_file: /usr/share/ssl/certs/ca-bundle.crt
createonpost: no
autocreateinboxfolders: Sent | Trash | Drafts
quotawarn: 90
lmtp_over_quota_perm_failure: 1
autocreatequota: 2000000
soft_noauth: 0
username_tolower: 1
unix_group_enable: 0
lmtp_downcase_rcpt: 1

-------------- /etc/pam.d/imap --------------
#%PAM-1.0
auth       required     pam_stack.so service=system-auth
account    required     pam_stack.so service=system-auth
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