5 simple steps to remove Blacklisting for small to medium businesses.

By MD Duncan

In an earlier blog, we discussed 4 causes of e-mail blacklisting and how to fix it.    This article covers how to get removed from a blacklist.

Your clients, suppliers or opportunities claim they never recieved your e-mail.    You send again.  Still not getting through.    Your e-mails seem to be lost in the ether.    You company has likely been blacklisted.   How do you know if you’ve been blacklisted?

There are a few websites you can check to see if you’ve been blacklisted.  However, unless you remove the source (virus and/or trojan) from your network, you’ll end up back on the same blacklist AND get penalised for appearing again.

1) Confirm your company appears on one of the many blacklists.  More than 100 blacklists are covered with in MXToolbox, http://mxtoolbox.com/blacklists.aspx.    You will need to input your mail server address.   (Generally, the mail server address is  “mail.companyname.com.au” but he MXToolbox website will help you find it if you do not know.)

2) Short-term work around. In the short-term, you can get your IT guys to configure a smart host to allow e-mail to be sent through third party mail servers.  This gives you a temporary solution while waiting to get your IP address removed.

3) Find Virus and/or Trojan and remove it.    Once you think you’ve removed it, scan again.  (Part two covers a tool/appliance to help with this.)    THIS IS A VERY IMPORTANT STEP.   If you do not remove source of the problem, it could make your blacklist problem worse.

4) Remove from Blacklist.    Follow instructions for getting it removed.

As Google, Telstra and other ISPs have their own algorithyms on blacklists, there is no way to get removed from these except to wait.    For example, If you are unluckey enough to get on Googles’ blacklist, you will not be able to send email to gmail accounts until Google determines your domain is safe.    Google does not give enough information on removing your IP address, so you may have to wait 24-48 hours after you remove the source problem before you can send to gmail again.

5) Set up a whitelist.

junk optionsTIP:   I am sure you have right clicked on mail and seen options to “never block sender” or “never block domain”.  Similar to this, Companies with exchange servers who recieve your emails can put your domain  on their “Whitelist”.    This ensures you can always send emails to those companies where you have a business to business relationship.  You can work with other companies with whom you have a relationship to ensure you allow all mail to come straight through by whitelisting.   Although this is a great tactic, it is a bit of an administrative headache, unless you are in IT.    Note:  If you are a client of ours, you are most likely on our “white list.”

For more advice on how to get the most out of your Managed Services, contact us at dd@empowerit.com.au or visit our website at EmpowerIT.com.au

Next: Why we recommend High Availability


MX Toolbox has a variety of tools, including the tool for blacklists.   For high risk email users, they offer a subscription service to monitor blacklists and inform you if you have a problem.  http://mxtoolbox.com/blacklists.aspx

2 thoughts on “What to do when your e-mail is Blacklisted

  1. Pingback: 4 Causes of e-mail Blacklisting and how to fix it (part 1) | Cloud Nerve Network

  2. Pingback: 3 Security Tools to fight and manage blacklists (part 2) | Cloud Nerve Network

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