help for ldap and postfix in redhat 9

[chander chouhan <chander chouhan in mindmillsoftware com>]

i am able to recieve the mail in my mail box but not able to recieve the 
mail thorugh either pop3 or imap.

what could be the problem

this is my /var/log/syslog last lines

May 24 19:32:09 bono sh: unable to dlopen /usr/lib/sasl/libgssapiv2.so: 
/usr/lib/sasl/libgssapiv2.so: undefined symbol: GSS_C_NT_HOSTBASED_SERVICE
May 24 19:35:00 bono python: unable to dlopen 
/usr/lib/sasl/libgssapiv2.so: /usr/lib/sasl/libgssapiv2.so: undefined 
symbol: GSS_C_NT_HOSTBASED_SERVICE


my /var/log/maillog has following error , although i am giving login 
name and password but it is showing that i have not given any username


: daemon started -- version 2.0.16
May 24 19:43:04 bono pop3d: Connection, ip=[::ffff:220.220.220.223]
May 24 19:43:14 bono pop3d: LOGIN FAILED, ip=[::ffff:220.220.220.223]