The topology service on my Mailbox/Hub transport server runs without apparent error. However the Edge transport server reports an error 2152, MSExchangeADAccess error "An RPC request to the Microsoft Exchange Active Directory Topology Service failed with error 1753 (Error 6d9 from HrGetServersForRole). " There is no such service on the ET server, and I can't tell from the logs whether it failed to install or not. The following are repeated a few times in the log: [8/3/2006 3:17:37 PM] [1] Processing component 'Transport Perf Counters' (Configuring components).[8/3/2006 3:17:37 PM] [1] Executing 'new-PerfCounters -DefinitionFileName BatchPointCounters.xml', handleError = True[8/3/2006 3:17:37 PM] [2] Launching sub-task '$error.Clear(); new-PerfCounters -DefinitionFileName BatchPointCounters.xml'.[8/3/2006 3:17:37 PM] [2] Beginning the task's processing.[8/3/2006 3:17:37 PM] [2] Executing command '$error.Clear(); new-PerfCounters -DefinitionFileName BatchPointCounters.xml'.[8/3/2006 3:17:37 PM] [2] Processing one object in the task.[8/3/2006 3:17:37 PM] [2] Processing file: C:\Program Files\Microsoft\Exchange Server\Setup\Perf\BatchPointCounters.xml[8/3/2006 3:17:37 PM] [2] Performance counter name is Cursors opened total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Cursors closed total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Transactions committed total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Transactions aborted total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Database connections current, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Database connections rejected total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches pending total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed normal total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches timed out total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches waiting current, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches waiting total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed background total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batch size executed total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed total, type is NumberOfItems32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Cursors opened/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Cursors closed/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Transactions committed/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Transactions aborted/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Database connections rejected/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches pending/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed normal/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches timed out/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches waiting/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed background/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batch size executed/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:37 PM] [2] Performance counter name is Batches executed/sec, type is RateOfCountsPerSecond32.[8/3/2006 3:17:39 PM] [2] Performance counter category name is 'MSExchangeTransport Batch Point'.[8/3/2006 3:17:39 PM] [2] Starting: lodctr.exe arguments: "/s:uninstall-perf-MSExchangeTransport Batch Point-20060803-031739.532.bak"[8/3/2006 3:17:39 PM] [2] Process standard output: [8/3/2006 3:17:39 PM] [2] Process standard error: [8/3/2006 3:17:39 PM] [2] Starting: unlodctr.exe arguments: "MSExchangeTransport Batch Point"[8/3/2006 3:17:39 PM] [2] Process standard output: Removing counter names and explain text for MSExchangeTransport Batch PointUpdating text for language 009 [8/3/2006 3:17:39 PM] [2] Process standard error: [8/3/2006 3:17:39 PM] [2] Starting: lodctr.exe arguments: "/s:install-perf-C:\Program Files\Microsoft\Exchange Server\Setup\Perf\BatchPointCounters.ini-20060803-031739.682.bak"[8/3/2006 3:17:39 PM] [2] Process standard output: [8/3/2006 3:17:39 PM] [2] Process standard error: [8/3/2006 3:17:39 PM] [2] Starting: lodctr.exe arguments: "C:\Program Files\Microsoft\Exchange Server\Setup\Perf\BatchPointCounters.ini"[8/3/2006 3:17:40 PM] [2] Process standard output: [8/3/2006 3:17:40 PM] [2] Process standard error: [8/3/2006 3:17:40 PM] [2] Ending the task's processing. I suspect that off-site email is not getting out of the queues due to the first error from the event log. ANy ideas, thoughts, or fixes? thx bill

Are there any [ERROR] entries in the log file?

I had the same exact problem on my Edge server. I had installed Security Configuration Wizard, created and applied the policyand then read that it is not supported with E2K7 Beta 2. :) So I rolled back the SCW security policy and discovered that Edge synchronization doesn't work evenafter that(Windows Firewall retained list of the ports from the policy template and was blocking all others). There was error 2152 reported on Edge server's Application Log: "An RPC request to the Microsoft Exchange Active Directory Topology Service failed with error 1753 (Error 6d9 from HrGetServersForRole)." According to description and help files, necessary ports to open for ADAM on the Edge, are 50389 TCP and 50636 UDP (http://www.microsoft.com/technet/prodtechnol/exchange/E2k7Help/56211f98-950f-4df3-9db3-1742e065eed9.mspx?mfr=true). This lastseemed suspicious to me(how SSL session can use UDP only?), so I also opened 50636 TCP, and then Edge synchronization started working normally, no more errors. I could see 50636 TCP connections established from Hub to Edge server during the Edge sync.

I seem to be experiencing the same problems on my edge server. Unfortunately, i'm not using the Windows Firewall (or any firewall in between the servers), so all ports should be open and accessible. Are there any other reasons for the requests to fail? I've been looking through all forums and such for days now, without a usuable answer.