testing pop

[Sam]

Hi,

The pop login failed with cyrus-imap23.
the error message is:
Aug  7 15:17:10 newbox pop3[35477]: badlogin: sender.com [10.1.2.99] 
plaintext sam SASL(-13): user not found: checkpass failed

In the other mail box (core2) with the identical configuration, the 
login is successful with the following message:
Aug  7 14:19:01 core9 pop[14569]: login: [10.1.4.6] john plaintext User 
logged in


Would this mean cyrus in box is using SASL, while core9 does not?

Thanks
SAm