Transport Service Failing to Start – Exchange 2007

Right after installing Exchange 2007 if you notice you can't receive or send emails and you've set up your connectors right, check for the following error in the event logs:

ERROR: edgetransport (4364) Transport Mail Database: An attempt to
determine the minimum I/O block size for the volume "C:" containing
"C:Program FilesMicrosoftExchange ServerTransportRolesdataQueue"
failed with system error 5 (0x00000005): "Access is denied. ". The
operation will fail with error -1032 (0xfffffbf8).

This is due to lack of permissions on the account (Network Services) that is running the Transport Service. After noticing that I set the security on that directory to full access so that Network Services could access it. Once done with that, I ran into the issue that I stilll had the error message. After surfing the web I came across this website http://trycatch.be/blogs/pdtit/archive/2007/12/07/ex2007-transport-service-failing-to-start.aspx , which indicated the following:

"

Browse to the C-drive Root / Properties / Security / Add the Network
Service (local machine) account; by default, it is granted Read &
Execute rights.

Once this is done, restart the EX2007 Transport Service. It should
start successfully; as a final check, go the the Transport Queue
directory (path mentioned in error 2) above as well), where some files
should be created in the …dataqueue directory"

Once I did that, it infact ran properly and I was able to send and receive emails.