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Generating a 1024-bit DKIM key when not able to add the default 2048-bit DKIM key into DNS

Author: Hitesh Bansal Updated

Overview

This article provides information on how to generate a 1024-bit DKIM key if your domain hosting is not allowing you to add the default 2048-bit DKIM key into the DNS.

 

Solution

You need to generate a 'short' 1024-bit DKIM key.

Note: Kerio Connect includes a 2048-bit DKIM public key. If the public key is too long (some providers may restrict the length of the TXT value), you can use an online DKIM key creator to create a 1024-bit key. 

Follow these steps to generate a short DKIM key using the DKIM wizard:

  1. Go to the DKIM wizard page
  2. Enter your Domain name 
  3. Use mail for the DomainKey Selector
  4. Select 1024 key size
  5. Click Create Keys
    mceclip0.png
     
  6. Confirmation: The page displays your public and private keys. You may now add the new private key to Kerio Connect.
    mceclip1.png

 

Testing

Configure the DNS for DKIM and test as per the 'Testing' section in Adding DKIM and DMARC Records to Kerio Connect.

 

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