getting problem in postfix+ldap

[chander chouhan]

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