I believe the former shouldn't be higher than 25ms and the latter higher than 50ms, but what's the difference between the two? Applies to Exchange 2007.

According to the article below, “MSExchangeIS\RPC Averaged Latency” shows the RPC latency in general across all RPC operations, and the “MSExchangeIS Client (*)\RPC Average Latency” can determine if one or several protocols cause more RPC latency than the others Monitoring Mailbox ServersPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Thanks, but with MSExchangeIS Client (*)\RPC Average Latency do you know how to actually find out which client is causing the problem?

On Sat, 29 Jan 2011 16:13:14 +0000, Sheen1990 wrote: >Thanks, but with MSExchangeIS Client (*)\RPC Average Latency do you know how to actually find out which client is causing the problem? Use ExMon. http://msexchangeteam.com/archive/2009/04/22/451137.aspx --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

I don’t think you can use “MSExchangeIS Client (*)\RPC Average Latency” to determine that, as the count is categorized by protocols, not client The tool from Rich can help on the taskPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.