Hyper-V, Microsofts replacement for their great Virtual Server product has been released. Full 64 bit client / guest support and free on a Windows 2008 Server. Would be nice to get a Vista version but we’re not holding our breath.
Expect a host server reboot and a re-install of the Intergration Services on each guest followed with a reboot.
You can get the download from here. It will be on Windows Updates around the second week of July.
Microsoft have released an update for Windows Vista with SP1, KB952709 is marked as a Reliability and performance update with a whole list of fixes such as -
You can find the full list of fixes Here along with the update for 32bit and 64bit versions of Windows Vista SP1
Ever had request to block an e-mail address? We had one from a customer last week so we decided to use Transport rules in exchange 2007.
These work in the same sort of way that Rules do in Outlook but on a global level.
We setup a transport rule to send a rejection back to the sender, you can either leave the standard message (see Below) or you change the rejection message and error code if you wish.
You can setup transport rules through the Exchange Management console, in organization configuration, under Hub Transport go to the Transport Rules Tab and select ‘New Transport Rule’ down the right hand side.
Example of the rejection message -
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<Domain.local #5.7.1 smtp;550 5.7.1 Delivery not authorized, message refused>
By default, in Exchange 2007, distribution groups cannot be mailed without authentication. This means that any distribution group that receives external mail will respond with a rejection, until this default behaviour is altered.
#5.7.1 smtp;550 5.7.1 RESOLVER.RST.AuthRequired; authentication required
A good idea in the face of spam, except that this change in behaviour isn’t really shouted about much in the documentation.
The GUI way to alter this is to head into the Exchange 2007 Console, head into the properities of the distribution group, and then the Mail Flow Settings. Select Message Delivery Restrictions and then click Properties. Untick “Require that all senders are authenticated”.
It appears that the UK or maybe in particular Wales is starting to push e-crime and how to stop it. Just spotted it on the local news. Not quite sure that it’s going to help as their advice doesn’t seem to focus on detailed technical help for people. More over the basic things that most businesses should be doing anyway ! But maybe that’s exactly what people need … the basics first ! Luckily we’ve been pushing these basic points to our customers for years 
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If you would like help implementing a successful e-crime protection policy in your network please give us a call on 0845 5210 140.
The Wales e-Crime site can be found here.
