LDAP export successful but can't login

[JOYDEEP]

OK :-)
now I hv successfully exported the authentication from sql to LDAP.

in configuration I hv  used

LDAP accounts context:       ou=Users,dc=kolkatainfoservices,dc=in
LDAP groups context:          ou=Groups,dc=kolkatainfoservices,dc=in
LDAP search filter for accounts, default: "(uid=%Users)",
%domain=infoservices.in

but now I can't login as admin or even as a general user.

how can I fix it ? please help.