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Removal from Blacklist for a fee

In the past 3 days we have 5 domains to which we can no longer send emails. WE receive a 554 error generally indicating the requested server is refusiing the email at the greeting. I have contacted the companies rejecting the emails and one has ressponded we are on a blacklist. I checked using MXTOOLBOX and our IP address is not listed on any public blacklists. I was eventually directed to a site (openrbl.org) and it indicates our doamin is blackilisted by apnews_l1. From what I can gather this is a private blacklist (appears to be out of Germany) site that is asking for money to be removed from the list or wait 7 days and the domain will be removed at that time. We are not spamming, how we got on the list in the first place puzzles me. I have never seen a site asking for money to be removed from from a list. Has anyone come across this before? Is this common? Are there any other options?    
What stops sites like this from putting you back on the list after being removed from it?
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kingsville
Asked:
kingsville
1 Solution
 
robrandonCommented:
Sounds like a scam to me.  Have the recipient domain add your domain to their white list.
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kingsvilleAuthor Commented:
I contacted one of the companies that was not receiving our emails and told them about the apnews blacklist and they told me they would investigate further (they are a cable compnay in our area) and 5 minutes after the conversation emails to them were working again. Testing the other domains also started working again. I don't have an explanation as to why unless there was a polluted DNS issue on thier routers or they removed any reference to apnews. All i know is for the moment all is working again.  
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