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SPF Record

SPF is Sender Policy Framework. This is a tool to help fight spam by validating the from address of emails. When an email is received by an email server the sending domain can be checked for proper origination. Here is a sample rule in DNS: v=spf1 ip4: mx ptr -all Here is a tool to validate the […]

Network Speed Test

How fast is your Internet connection? Here’s mine from my server’s co-location facility: Run a speed test yourself and let me know your results.  

Network Tools

Here are a couple of sites useful for testing DNS and other network issues: