How are you screening incoming email for spam? If you are relying on "Sender ID", you may want to reconsider your approach.

Research conducted by OnlyMyEmail, Inc. during the last 60 days clearly reveals that emails sent by a domain without a published SPF record are actually slightly less likely to be spam than those sent by domains that publish sender ID information in their DNS record, opposite to the promoted value of Sender ID.

Further, emails that return a positive match for Sender ID are not significantly more likely to be legitimate emails than those without a published SPF record, again contrary to the perceived benefits of implementing Sender ID.

Finally, if Sender ID were relied upon for blocking emails, this would result in a false-positive rate of nearly 8.6 percent.

Combined, there results qualify Sender ID as being one of the most ineffective and least accurate anti-spam tools available anywhere, producing results no better the first-generation anti-spam filters now a decade out of date.

Written by Jay Hammond, Managing Editor, AccountingWEB, Inc. editor@accountingweb.com

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