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Windows Exchange: Spam & SPF records

October 5th, 2009 Leave a comment Go to comments

Just thought I’d do a quick post on one of two things I’ve just been looking at for Windows Exchange 2003; SPF records.

Sender Policy Framework (SPF) is basically an email validation system used to prevent spam. If you own a domain, you create an SPF record in your DNS records detailing which machines are allowed to send mail as your domain (i.e. your exchange server and possibly your ISP too). Then, when an email server receives an email, it can check on the DNS records of the domain and see if the computer who sent the email is really allowed to send email as that domain. If it’s not, the the email will be marked as spam. It will help cut down the amount of spam you get that’s addresses from yourself!

If you need help creating an SPF record, check out this excellent SPF wizard.

I’ve also just been looking at Windows Exchange Server 2003 possibly being an open relay. Will do a post on that soon.

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