Publish standalone RootCA CRL to Issuing CA and Active Directory

On the  RootCA server.
Start Certificate Authority
right click on revoked certificates->all tasks->publish
explore to windir\system32\certsrv\certenroll
copy rootca.crl to file://issuingca/certenroll
switch to issuingca server
start cmd window
certutil -dspublish windir\system32\certsrv\certenroll\rootca.crl

Windows 7 cannot connect to printer 0x0000000a

1. Delete your printer driver

2. Go to Services and turn Print Spooling OFF

3. Count to 10 slowly and turn Print Spooling ON

4. Re-install printer driver.

Allow Anonymous relay from specified receive connector in Exchange 2007

Get-ReceiveConnector "Receive Connector Name" | Add-ADPermission -User "NT AUTHORITY\ANONYMOUS LOGON" -ExtendedRights "Ms-Exch-SMTP-Accept-Any-Recipient"