after apt-get upgrade command not work courier-authdaemon.
Jun 26 16:11:57 mail authdaemond: modules="authvchkpw", daemons=5
Jun 26 16:11:57 mail authdaemond: Installing libauthvchkpw
Jun 26 16:11:57 mail authdaemond: libauthvchkpw.so: cannot open shared object file: No such file or directory
Jun 26 16:12:26 mail couriertcpd: Connection, ip=[::ffff:
127.0.0.1]
Jun 26 16:12:26 mail authdaemond: received auth request, service=imap, authtype=login
Jun 26 16:12:26 mail authdaemond: FAIL, all modules rejected
Jun 26 16:12:26 mail couriertcpd: LOGIN FAILED,
user=mailuser@domain.com, ip=[::ffff:
127.0.0.1]
Jun 26 16:12:31 mail couriertcpd: LOGOUT, ip=[::ffff:
127.0.0.1], rcvd=51, sent=298