Edge Transport Server Limitations - messages delivered per day?

I'm currently on the hunt for some kind of baseline / benchmark that will indicate how many messages per day (or per second) an Edge Transport server is capable of handling. I feel like this should be in some whitepaper somewhere for when Edge Transport
is designed, so you know how many to deploy, but I can't find it.
I know system specs will be a factor. We have the current hardware in our box:
2 processors (2.67 GHz)
16 GB RAM
64-bit OS (Windows Server 2008 R2 Enterprise)
If anyone has come across any kind of guideline for email delivery limitations of ET, I'd appreciate being pointed to them.
Thanks

The current Exchange servers are much faster and beefier than they were when I worked with Exchange 4 Beta 2 with a customer many years ago.  They tried to swamp their Exchange server (dual 90 MHz Pentium server with 128 MB RAM) using six Unix workstations
running Mailstorm against it.  They had to stop when their primary Unix systems handling inbound email were overloaded due to how they set up their test.  And the Exchange server never skipped a beat.
Another customer situation that may help is that I have seen 10,000 messages in an Exchange 2010 queue (due the smart host they were using for external delivery was offline for maintenance) drop to zero within 15 minutes.  I'd suggest that you run some
sort of test of your own to determine how many messages your edge is capable of delivering, but these may give you an indication of the expected capabilities.

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  • Co-Locate Client Access and Edge Transport Role on Same Server?

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