> I have set the following:
> LDAP_SERVER_nickname=ldaps://ubldap.buffalo.edu
> LDAP_UID_nickname=LDAPBINDUSER
> LDAP_AUTH_nickname=XXXXXXXX
> LDAP_PW_BASE_nickname=ou=people,dc=buffalo,dc=edu
> LDAP_PW_FILTER_nickname='%u'
> LDAP_DEFAULT_EMAIL_nickname=eduPersonPrincipalName
> LDAP_DEFAULT_NAME_nickname=cn

You will need:

LDAP_PW_SERVERS=nickname (same nickname you used above)

I also think your filter is wrong. I don't know the layout of your particular directory, but based on your sample, it ought to be something like:

LDAP_PW_FILTER_nickname=(eduPersonPrincipalName=%s)

The DEFAULT_EMAIL and DEFAULT_NAME variables are used when pulling subscriber data out of the directory. For password validation, LISTSERV uses the exact filter you specify.

  Eric