Specify a blank sender in SMTP communication using a Telnet client

If you ever need to specify a blank sender in the mail from command when debugging an SMTP server by using a Telnet client; use <>. For example: 220 mta.domain.com Microsoft ESMTP MAIL Service ready at Mon, 22 Dec 2008 23:21:41 +0100 ehlo 250-mta.domain.com Hello [10.10.10.10] 250-SIZE 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-X-ANONYMOUSTLS 250-AUTH NTLM 250-X-EXPS …

How to reinstall Virtual Server 2005 Virtual Machine Additions

The GUI insatller (setup.exe) for the Virtual Server 2005 Virtual Machine Additions do not offer a reinstall or repair option. That means that if you ever experience any problems with any of the additions you are forced to first remove the additions, reboot, reinstall them and the reboot again. But if you use the MSI …

What are the security benefits of running a service as the Local System Account as opposed to a user account?

With the release of Windows 2000 products from Microsoft, most prominently Exchange 2000, started running their services under the Local System1 account instead of using a dedicated Active Directory User account, or what is commonly known as a service account2. The reason for this was security. As time passed more and more products adapted this …