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How do I fix the reputation of my IP address?

Tuesday, April 19th, 2016


It happens — you’re sending email messages without issue, and then suddenly they’re not being delivered, or they’re being tagged as spam.  A little digging reveals that the problem is that your “IP reputation” is now poor, and you need to fix it somehow.

This is our latest “Ask Erik” question, from Angelo Correa or Living Legacy, Inc.

How do I fix the reputation of my IP address?

What is IP Reputation?

Email service providers (e.g. AOL, Gmail, LuxSci) and email filtering systems (e.g. Barracuda, McAfee, Proofpoint, SenderScore) collaborate on and track the sending of unwanted email in order to reduce the blight of email spam that continues to plague the Internet.  Some of the significant factors that they track include:

  1. Quantity of email sent from your IP address
  2. The spam-like characteristics of these messages (based on spam filter analysis)
  3. The number of spam complaints by recipients of these messages
  4. The number of messages sent to invalid recipients or honey pots. Honey pots are email addresses that do not belong to real people and only exist as traps for senders who have acquired these email addresses via web site scraping or some other illegitimate manner.

Put together, these factors end up determining the reputation of that IP address with respect to the sending of email messages.  If the reputation becomes poor, then spam filters will start to quarantine or reject your messages, resulting in poor deliverability.

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