Saturday, October 30, 2010

FTP Transfers Blocked By SonicWall

Here’s a hidden setting in SonicWall units that is meant to protect networks but may cause blocked FTP transfers.

Navigate to the Internal Settings page on the unit (http:/<IP address>/diag,html) and uncheck “FTP bounce attack protection”

We recommend leaving this on unless you find this specifically resolves a FTP transfer issue.

Saturday, October 23, 2010

SBS 2008 Reporting Stops Working After WSUS 3 SP2

SBS 2008 queries WSUS for missing updates on the network. If you install WSUS 3 SP2 and your WSUS database has never been purged, the daily SBS reporting may stop working.

The fix? Open up the WSUS console, go to Options and run the Server Cleanup Wizard. However, on the first time, don’t run the wizard with all the options checked. You’ll find it it won’t finish. Run each option independently. The first option, Unused updates and update revisions, will take a long, long time. So be patient. Do it on a weekend.

Once the WSUS cleanup is done, reporting should be back to normal.

Saturday, October 16, 2010

Mail Enabled Distribution groups in Exchange 2007

Simple concept – create an email address that sends mail to a group of people. It’s easy to set up in Exchange 2007 too:

  • Open Exchange Management Console
  • Click on Recipient Configuration
  • In the Action task panel, click on New Distribution Group to start the wizard
  • On the Introduction page, select New Group and click Next
  • On the Group Information page, select Distribution. Then, type the name of the group under the Name and click Next
  • Click New and then Finish to complete the wizard.
  • Right click on the new group and select properties and select the Members tab
  • Add the desired users to the group and click Apply.

You’d think that would be it, however there’s a catch. This only creates an internal distribution list. In order for it to work externally, there’s more:

  • In the Group Properties dialog box that’s open, select the Mail Flow Settings tab
  • Highlight Message Delivery Restrictions and press the Properties button.
  • Uncheck the “Require that all senders are authenticated” box and click Apply.

Saturday, October 9, 2010

Confusing Error Messages – IRQL_NOT_LESS_OR_EQUAL

This is one of the dreaded “blue screen of death” messages. Do a web search, and you’ll find it’s usually caused by a bad device driver. MS TechNet has a list of things to try here.

Our fast method for getting the box back on it’s feet is to run the System Restore utility in Safe Mode. Then you can easily reinstall or update the faulty driver.

However, what if nothing has been installed and this doesn’t resolve the issue? Try running the chkdsk/r command. In many instances, a slightly tweaked disk will bring the system to a halt with this message. Chkdsk can take a while, but this usually corrects a problem that System Restore won’t. If you find chkdsk takes a very long time, read the TechNet article and try their recommendations.

Saturday, October 2, 2010

Access Based Enumeration

This is a great file system feature “borrowed” from NetWare. If you’ve ever come across the need to hide files and folders a user does not have access to, simply turn this on. Here’s a great blog post (thanks, Aaron!) that explains how to do it in Server 2003 and 2008.