Allowing application servers to relay off Exchange Server 2007

Allowing application servers to relay off Exchange Server 2007.

You want to allow some application such as SQL Server reporting or agent to send emails to external persons, however Exchange 2007 does not allow the mail out and you get an error in the logs like this:
SMTP error message “550 5.7.1 Unable to relay”

To allow mail through you need to do some further configuration and run a PowerShell script, this webpage provides a great explanation and instructions on exactly what you need to do:

Great utility for *nix OS – MTR

MTR combines the functionality of the ‘traceroute’ and ‘ping’ programs in a single network diagnostic tool.

As mtr starts, it investigates the network connection between the host mtr runs on and a user-specified destination host. After it determines the address of each network hop between the machines, it sends a sequence ICMP ECHO requests to each one to determine the quality of the link to each machine. As it does this, it prints running statistics about each machine.

Some distro’s include MTR as a package like Debian.

More info and download visit the Main Website:

ntop – Network Traffic Probe

ntop is a excellent Network Traffic monitoring tool and a very handy thing to have on your network, as it provides a snapshot of the traffic flying around.
Once installed you can view the network traffic information via a web browser, and ntop doesn’t even need Apache installed!Installing it onto a Debian box with these quick commands:

  1. #aptitude install ntop
  2. Accept the default ntop username
  3. Set the admin password for the ntop username with #ntop -A
  4. Start the ntop service if it’s not already started with #/etc/init.d/ntop start
  5. Now start a web browser and point it to this servers IP Address in this case
Now you will see a page like this:

Clonezilla & Clonezilla Live – OpenSource Image Software

One of the best imaging applications I’ve ever used and it’s Open Source Software and FREE!

Clonezilla and my favourite for doing a quick image backup of your computer is Clonezilla Live.
From the Clonezilla website here is a quick description:
Clonezilla live is suitable for single machine backup and restore. While Clonezilla SE is for massive deployment, it can clone many (40 plus!) computers simultaneously. Clonezilla saves and restores only used blocks in the harddisk. This increases the clone efficiency. At the NCHC’s Classroom C, Clonezilla SE was used to clone 41 computers simultaneously. It took only about 10 minutes to clone a 5.6 GBytes system image to all 41 computers via multicasting!

More Info and Downloads at

SNMPD on Linux Debian, only binding to localhost

If you need to change the listen address for snmpd, then modify /etc/default/snmpd for Debian Linux.

Now remove from:
SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/′
and add your IP or leave blank for listen on

SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/′

Ubuntu is slightly different on some versions, check the config files.

Default input language on servers required to be English Australian

Default input language on servers required to be English Australian, can’t remove English (United States).

Try this on the Citrix servers and remove the English (United states) from the control panel area regional settings etc.

I had the same problem – Microsoft article 322042 should do the trick. Basically all you have to do is add in a:
DWORD value IgnoreRemoteKeyboardLayout = 1 under HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlKeyboard Layout

Also works with any workstation.

Exclude VMware Virtual Adapters from Vista/2008 Network Awareness and Windows Firewall

Excellent article regarding VMWare adapters and the windows firewall – I have always wondered what was going on with the Windows firewall on my laptop and now I know.

From Petri and