In man slapd.conf you can read:
-- rootdn <dn> Specify the distinguished name that is not subject to access control or administrative limit restrictions for operations on this database. [...] Note that the rootdn is always needed when using syncrepl. --
In this Conexitor forum[1] about replication configuration a particular DN is used with permissions granted via ACIs, it seems that cn=replicator is not the rootdn.
--Quanah
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Quanah Gibson-Mount Principal Software Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration