Hello!We are running exchange 2003 standard with all the latest updates without any problems on machine 1. Now we bought a new machine (machine 2) and installed also exchang 2003 standard with all the latest updates.Because machine 1 was a domain controller we used dcpromo to remove this from machine 1 and converted the machine to standard member server.We used Exchange System Manager to transfer about 500 mailboxes to machine 2 - withount any problems. The only problem we got is that there are three (system?)mailboxes we could not transfer - I didn't keep the names in my mind (one mailbox was called SMTP) and we continued with the standard steps to get machine 1 out of our exchange-organization (with machine 1 and machine 2). Everything seems to be ok but the setup of exchange can't uninstall the software because of the three mailboxes we could not transfer (no entry in exchange system manager to move them). So we shut down machine 1 because we didn't find any solution for that. Of course we are able to restart machine 1 again - we still have the machine here!After a few days without troubles we recognized that new users didn't get E-Mailadresses - so in the Active Directory on the first page and on the eMail-Address Tab you cannot find any entry. If you remove exchange attributes via Exchange-Tasks in Active Directory and recreate the mailbox nothing happens - you can see the tabs from exchange but without any emailaddress.Of course I checked the RUS and there is machine2 selected in the properties. The default policy for that has two entries - one for SMTP with the value %m@domain.com and one for X400 which should be ok because I checked other exchange-oranizations without that problem...When I searched via google and microsoft knowledgebase I didn't find anything. Going thru the Windows Eventlog Entries didn't help. I changed the log-settings in Exchange for MSEchangeAL to maximum for LDAP-Operations and Addresslistsync. The same for MSExchangeSA and there for Proxycreation.Actually I can see that RUS is running thru the directory because my eventlog is full with Event 8011 8012 - only Informational no Warning, no Errors. 8011 looks like:Verzeichnis machine2.mydomain.local an Basis 'CN=System Policies,CN=XMail,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mydomain,DC=local' wird mit dem Filter '(&(USNChanged>=271183)((|(objectCategory=addressbookcontainer)(objectCategory=msExchSystemPolicy)(objectCategory=msExchRecipientPolicy))))' durchsucht; die Attribute distinguishedName; objectGUID; LegacyExchangeDN; msExchADCGlobalNames; ObjectSID; ObjectClass; objectCategory; purportedSearch; msExchSearchContainers; msExchPurportedSearchUI; msExchPolicyOrder; msExchPolicyOptionList; gatewayProxy; disabledGatewayProxy; msExchMandatoryAttrs; msExchADCOptions; msExchProxyGenOptions; displayName; msExchHideFromAddressLists; showInAdvancedViewOnly; msExchALObjectVersion; showInAddressBook; replPropertyMetaData; replicatedObjectVersion; ReplicationSignature; WhenChanged; WhenCreated; USNchanged; USNcreated; ObjectVersion; isDeleted; msExchProcessedSids; heuristics; msExchServerGroups; msExchServerGlobalGroups werden angefordert. 8012:Die Suche in dem Verzeichnis domaincontroller.mydomain.local auf der Basis von'CN=System Policies,CN=XMail,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=mydomain,DC=local' ergab 0 Objekte. It seems that RUS ends with 8157 event which means that it's waiting for a new execution of rus... (no error)It would be great if anyone could help!!!Thanks

Hello!It was a permission problem so the machine2 has no rights to CHANGE the attributes in the user object of the AD. If you recreate Recipient Update Service (Domain) in Exchange System Manager the Systemmanger wrotes something like "granting access to ...." - after that the problem was solved...This article helped http://msexchangeteam.com/archive/2004/07/22/191513.aspx

Thanks for your sharing here.