Not able to use smart-sieve

[ram]

I have been using smart sieve for managing sieve scripts for a long time
Now on my new cyrus 2.3.13 server smart sieve is not able to login at
all. I get a login-failed message everytime 

I am still not sure wether it is a smartsieve issue or a cyrus issue 
sivtest script logs in fine 

I googled for smartsieve errors , most of them are regards to pear
errors. I have all the pear modules installed already

When I try to debug smartsieve , 
Mar  7 16:01:04 pop4 smartsieve[26136]: getCryptLib: using rc4
Mar  7 16:01:04 pop4 smartsieve[26136]: getCryptLib: using rc4
Mar  7 16:01:04 pop4 smartsieve[26136]: FAILED LOGIN: XXXXXXXXX
[59.163.11.66] {example}: authenticate: authentication failure
connecting to 127.0.0.1: data received



How do I debug this further ??