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An interesting article was posted on Slashdot in December: As public IPv4 addresses dwindle and carriers roll out IPv6, a new problem has surfaced. We have to move through a gray phase where the only new globally routable addresses we can get are IPv6, but most public content we want to reach is still IPv4.Read more

There are still quite a few small and medium-sized ISPs out there who use technology such as POP before SMTP to allow mail relaying. However as threats increase, it’s become standard operating procedure to require proper authentication from end-users to allow outbound mail relay. One of my customers came up with a fairly gentle wayRead more

If you’re as busy as most IT administrators, you’re probably looking for the most efficient way to manage your Exchange server. The best tool you can use is PowerShell. Exchange 2010 ships with a well-defined PowerShell 2.0 web service that allows you to manage and automate administrative tasks using a remote session through HTTP. It’sRead more

About to leave for the Christmas and New Years holidays? Don’t forget about your holiday admin checklist! Make sure your daily backups are working, check your backup logs! Make sure you have a redundancy solution in place for your mail infrastructure, even if it’s a lowly mail spooler. Make sure you have your list ofRead more

One of my customers is an admin who works within a small portion of a larger institution.  The main administrative group decided to overhaul their primary firewalls with UTM devices instead, which included spam and virus filtering for MTAs (Mail Transfer Agents). UTM = Unified Threat Management a somewhat recent market of devices that combineRead more