LDAP invalid credentials

[Stat <flavio stat com br>]

Dear friends,

I'm configuring a LDAP server using RH 7.2 standard OpenLDAP.When I try
to add someone and put standard "secret" password, a message appears:


ldapadd -x -D "cn=Manager, dc=gral,dc=com" -W -f gral.ldif
Enter LDAP Password:
ldap_bind: Invalid credentials


//slapd.conf

database        ldbm
suffix          "o=gral, c=BR"
rootdn          "cn=Manager, dc=gral, dc=com"
rootpw 		"secret"

//gral.ldif

dn: o=gral, c=BR
o: gral.com.br
objectClass: top
objectClass: organization


I need a help

Thanks in advance

Flávio