Site replication service was unable to verify legacy account details. Check the credential information on the Administrative Group property page for this server, and then stop and restart the Microsoft Exchange Site Replication Service.
As per Microsoft: "The Site Replication Service (SRS) runs under the local system account, but it needs to contact other directories within the site using the Exchange 5.5 service account. You can configure this account on the Administrative Group object in Active Directory". See MSEX2K3DB for more details.
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