I have just added a second openldap server 2.3.30 to my network and setup syncrepl in refreshOnly mode. I connected to the consumer ldap server using a ldap client but when I tried to make a change I got an error stating that I must have an update referral setup. After adding the updateref to my consumer slapd.conf and restarting that I get an error stating that "modifications require stronger authentication desc Strong(er) authentication required."
Now if I try to add updatedn to the consumer slapd.conf I get the following error starting the ldap server: <updatedn> database already shadowed
Here is the last bit of my slapd.conf from the consumer: syncrepl rid=100 provider="ldap://192.168.1.40:389" binddn="uid=syncuser,ou=People,dc=radimg,dc=pitt,dc=edu" bindmethod=simple credentials=###CHANGED### searchbase="dc=radimg,dc=pitt,dc=edu" filter="(objectClass=*)" attrs"*" schemachecking=off scope=sub type=refreshOnly interval=00:06:00:00
updateref ldap://192.168.1.40