A Record | Managed DNS service HOWTO define DKIM/ADSP RRs - ZYTRAX Copy the value ( v=DKIM1; k=rsa; p=.) ***Policy records are no longer included as they are part of the deprecated DomainKeys, and not DKIM. Creating a DKIM TXT record can be done in various ways. Click the Edit DNS Zone File option under the DNS & ZONE FILES menu. Copy the text to create your DNS DKIM record. A DKIM selector, as indicated by the name, is a string used by the outgoing server to locate the private key to sign the email message, and by the receiving server to locate the public key in the DNS to verify the integrity of the email message. When we add for example 2048 bits DKIM DNS record which is a very long record, this record is completely ignored by Microsoft DNS. The DKIM checker verifies the presence and validity of a DKIM record. Sample MX record: NAME PRIORITY TYPE DATA mydomain.com. Check with your DNS provider to see if they allow more than 255 characters in the input field or not, as you may have to work with your provider to increase the size or to create the TXT record itself. This opens a dialog with your domain public key. Generate public and private keys Generate your public and private key pair using a dedicated tool. How to create the CNAME records for Outbound DKIM signing using GoDaddy ... The DKIM selector is specified in the DKIM-Signature header and indicates where the public key portion of the DKIM keypair exists in DNS. The private key stays at the server or service that sends the email and the public key is published by using a DNS text record. Once connected via SSH, install several packages via Yum. An e-mail message signed with DKIM will include a header item "DKIM-Signature" containing the cryptographic signature and a few other fields including a "selector" (s=) - for example: 3. DKIM Wizard. Click the gear icon next to the name of an existing domain and select Add DNS Record. In ClouDNS, you can use it by creating a TXT record. What this means any mx at this domain is allowed, so if my from address is me@example.com then the recipient looks up the DNS record for example.com and any mx there is allowed.