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slapd[20001]: <= bdb_equality_candidates: (mail) not indexed

This message is showed because the ldap server does not have mail attribute indexed.
To create an index for that attribute create a file with this content:

file mail_add_index.ldif

dn: olcDatabase={1}hdb,cn=config
add: olcDbIndex
olcDbIndex: mail eq,sub

Now, simply add the index with the following command:

# ldapmodify -Y EXTERNAL -H ldapi:/// -f mail_add_index_ldif
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
modifying entry "olcDatabase={1}hdb,cn=config"

One thought to “slapd[20001]: <= bdb_equality_candidates: (mail) not indexed”

  1. Thanks a lot for this information.

    For beginners, if you are using a mdb database, change the ‘hdb’ in first line to ‘mdb’.

    The tip in this page can be used for any attribute, as uniqueMember.

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