How to configure DKIM signature on subdomains PMTA.


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There is a main domain hosted by, created a subdomain - it posted mailWizz , transactional emails sent from this server.

Also, there are 10 servers, each with 10 ip: ( - On the main server 100 create subdomains and sending each subdomain to a separate IP.

Q: how to set up DKIM signature on all servers and subdomains that have been signed by the Primary Domain:

Example: come to me a man and said that I would send through your service letter, I have my own domain, he it verifies the received DKIM and SPF with all IP server registers in DNS, starts sending - recipients can see that sent a letter to domain: - through


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