Monitoring Without System Center Operations Manager

http://technet.microsoft.com/en-us/library/bb201720(EXCHG.80).aspx

How to generate HTML reports with the Exchange Management Shell (EMS)

Get-MailboxStatistics | Select DisplayName, ItemCount | Sort ItemCount | ConvertTo-HTML –Property DisplayName, ItemCount >C:\report.htm

How to increas size of Signature in OWA

You can create the key as a DWORD. The default decimal value is 4096 (4KB) and the max is 16672 (16KB).
It must go on the back-end server.
This will set it to the maximum value of 16KB:


Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeWeb\OWA]
"SignatureMaxLength"=dword:00004120