Downloaded SleepyCat 4.2.52, compiling and building manually. After downloading, I've just followed the instructions listed on the file docs/index.html under the directory where I've unpacked the .tar.gz bundle.

After unpacking you can run the suggested:

root@rdnt03:/usr/local/BerkeleyDB.4.2/build_unix#../dist/configure
root@rdnt03:/usr/local/BerkeleyDB.4.2/build_unix#make
root@rdnt03:/usr/local/BerkeleyDB.4.2/build_unix#make install

Downloaded Cyrus SASL 2.1.17, unpacking and following the instructions listed on the document doc/install.html, under the directory where I've unpacked the .tar.gz file. Here there's a point of attention, you need to run the configure script using some env parameters:

root@rdnt03:/usr/local/cyrus-sasl-2.1.17#env CPPFLAGS="-I/usr/local/BerkeleyDB.4.2/include"
LDFLAGS="-L/usr/local/BerkeleyDB.4.2/lib" ./configure

The CPPFLAGS and LDFLAGS environment parameters should point to the respective include and lib directories where Berkeley BDB was installed.

After that you can run the suggested:

root@rdnt03:/usr/local/cyrus-sasl-2.1.17#make
root@rdnt03:/usr/local/cyrus-sasl-2.1.17#make install
root@rdnt03:/usr/local/cyrus-sasl-2.1.17#ln -s /usr/local/lib/sasl2 /usr/lib/sasl2

Finally, I've installed OpenLDAP 2.2.5 using the same directions listed on this document, just running the configure script the same way as SASL's configure:

root@rdnt03:/usr/local/openldap-2.2.5#env CPPFLAGS="-I/usr/local/BerkeleyDB.4.2/include"
LDFLAGS="-L/usr/local/BerkeleyDB.4.2/lib" ./configure

After that, I've run the suggested:

root@rdnt03:/usr/local/openldap-2.2.5#make depend
root@rdnt03:/usr/local/openldap-2.2.5#make
root@rdnt03:/usr/local/openldap-2.2.5#make install

Next, I've created the sasl user database:

root@rdnt03:~# saslpasswd2 -c admin

You'll be prompted for a password. Remember that the username should not be a DN (distinguished name). Also remember to use the same password as your admin entry on the directory tree.

Now, you should set the sasl-regexp directive in the slapd.conf file before starting the slapd daemon and testing the authentication. My slapd.conf file resides at /usr/local/etc/openldap:

sasl-regexp uid=(.*),cn=rdnt03,cn=DIGEST-MD5,cn=auth uid=$1,ou=People,o=Ever

This parameter is in the format of:

uid=<username>,cn=<realm>,cn=<mech>,cn=auth

The username is taken from sasl and inserted into the ldap search string in the place of $1.Your realm is supposed to be your FQDN (fully qualified domain name), but in some cases it isn't, like mine. To find out what your realm is do:

root@rdnt03:~# sasldblistusers2
admin@rdnt03: userPassword
admin@rdnt03: cmusaslsecretOTP

In my case, rdnt03 is indicated as the realm. If it is your FQDN you shouldn't have any problems. I use the following LDIF file:

dn: o=Ever
o: Ever
description: Organization Root
objectClass: top
objectClass: organization

dn: ou=Staff, o=Ever
ou: Staff
description: These are privileged users that can interact with Organization products
objectClass: top
objectClass: organizationalUnit

dn: ou=People, o=Ever
ou: People
objectClass: top
objectClass: organizationalUnit

dn: uid=admin, ou=Staff, o=Ever
uid: admin
cn: LDAP Adminstrator
sn: admin
userPassword: {SHA}5en6G6MezRroT3XKqkdPOmY/BfQ=
objectClass: Top
objectClass: Person
objectClass: Organizationalperson
objectClass: Inetorgperson

dn: uid=admin,ou=People,o=Ever
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: inetOrgPerson
userPassword: {SHA}5en6G6MezRroT3XKqkdPOmY/BfQ=
displayName: admin
mail: admin@eversystems.com.br
uid: admin
cn: Administrator
sn: admin

Add the entries to your LDAP directory using the following command:

slapadd -c -l Ever.ldif -f slapd.conf -v -d 256

Now, start the slapd daemon and run a query using the ldapsearch command:

root@rdnt03:~# ldapsearch -U admin@rdnt03 -b 'o=Ever' '(objectclass=*)'
SASL/DIGEST-MD5 authentication started
Please enter your password:
SASL username: admin@rdnt03
SASL SSF: 128
SASL installing layers
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