attribute provided more than once

["Pete Veenbaas" <pete.veenbaas@sdrc.com>]

Greetings,

Running V2.0.23

I'm trying to add the following ldif entry with ldapadd:

dn: cn=Case,cn=Recipients,ou=EXUGSTL,o=EDS
changetype: add
cn: Case, Terri
objectClass: organizationalPerson
distinguishedName: cn=Case,cn=Recipients,ou=EXUGSTL,o=EDS
mail: terri.case@eds.com
sn: Case
telephoneNumber: 314-264-8445
rfc822Mailbox: terri.case@eds.com

the command I use is:

ldapadd -x -h localhost -D "cn=Manager,cn=Recipients,ou=EXUGSTL,o=EDS" -W -f
new1.ldf

The output I get is:

adding new entry "cn=Terri Case,cn=Recipients,ou=EXUGSTL,o=EDS"
ldap_add: Type or value exists
        additional info: attribute provided more than once

ldif_record() = 20

Here's my slapd.conf:

database        ldbm
suffix          "cn=Recipients,ou=EXUGSTL,o=EDS"
rootdn          "cn=Manager,cn=Recipients,ou=EXUGSTL,o=EDS"
# Cleartext passwords, especially for the rootdn, should
# be avoid.  See slappasswd(8) and slapd.conf(5) for details.
# Use of strong authentication encouraged.
rootpw          secret
# The database directory MUST exist prior to running slapd AND
# should only be accessible by the slapd/tools. Mode 700 recommended.
directory       /usr/local/var/openldap-ldbm
index   objectClass     eq

Any hints would be greatful!