s= is included in the DKIM signature. 600 IN TXT "v=DKIM1\; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC1TaNgLlSyQMNWVLNLvyY/neDgaL2oqQE8T5illKqCgDtFHc8eHVAU+nlcaGmrKmDMw9dbgiGk1ocgZ56NR4ycfUHwQhvQPMUZw0cveel/8EAGoi/UyPmqfcPibytH81NFtTMAxUeM4Op8A6iHkvAMj5qLf4YRNsTkKAV;"The public key (p=): MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC1TaNgLlSyQMNWVLNLvyY/neDgaL2oqQE8T5illKqCgDtFHc8eHVAU+nlcaGmrKmDMw9dbgiGk1ocgZ56NR4ycfUHwQhvQPMUZw0cveel/8EAGoi/UyPmqfcPibytH81NFtTMAxUeM4Op8A6iHkvAMj5qLf4YRNsTkKAVp= is the public key used by a mailbox provider to match to the DKIM signature generated using the private key. Not all mailbox providers ignore unrecognized tags, so you might see an error during the verification process. The tags shown in this example only appear in this record within DNS and not in the email header itself: . Some mailbox providers ignore a DKIM signature in test mode, so this tag should be removed prior to full deployment or changed to t=s if using the "i=" tag in the DKIM signature header.t=s indicates that any DKIM signature header using the "i=" tag must have the same domain value on the right-hand side of the @ sign in the "i=" tag and the "d=" tag (i= local-part@domain.com). A DKIM selector is a string used to to point to a specific DKIM public key record in your DNS. Find answers to your questions by searching across our knowledgebase, community, technical documentation and video tutorialsSupport on SonicWall Products, Services and SolutionsThis field is for validation purposes and should be left unchanged.Next-generation firewall for SMB, Enterprise, and GovernmentComprehensive security for your network security solutionAdvanced Threat Protection for modern threat landscapeModern Security Management for today’s security landscapeHigh-speed network switching for business connectivityStop advanced threats and rollback the damage caused by malwareControl access to unwanted and unsecure web contentNext-generation firewall for SMB, Enterprise, and GovernmentComprehensive security for your network security solutionAdvanced Threat Protection for modern threat landscapeModern Security Management for today’s security landscapeHigh-speed network switching for business connectivityStop advanced threats and rollback the damage caused by malwareControl access to unwanted and unsecure web content

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This tag is not the same as a selector record. This key is totally bound to a certain selector. Protect Federal Agencies and Networks with scalable, purpose-built cybersecurity solutions The selector is used to identify the public DKIM Key details of the Domain. The other acceptable value allowed is the word "email" which indicates that the message is an electronic mail message. The use of this flag is intended to constrain which signing address can use the selector record.h= indicates which hash algorithms are acceptable. TXT v=DKIM1; k=rsa; p= b= is the hash data of the headers listed in the h= tag; this hash is also called the DKIM signature and encoded in Base64.

It is generated along with its corresponding private key during the DKIM set-up process.v= is the version of the DKIM record. It is specified as "s=" tag in the DKIM-Signature header field, and can be found in the technical headers of an email.Validation on the receiver side uses the selector in combination with the signing domain in order to carry out a DNS query and find the public key in your DNS. The value must match the local-part of the i= flag in the DKIM signature field (i= local-part@domain.com) or contain a wildcard asterisk (*). If you have a message signed with a DKIM key, you can find the selector by looking at what is defined for the s= value in the DKIM-Signature header. Access to deal registration, MDF, sales and marketing tools, training and more The value must be DKIM1 and be the first tag in the DNS record.t= indicates the domain is testing DKIM or is enforcing a domain match in the signature header between the "i=" and "d=" tags.t=y indicates the domain is testing DKIM.​ Senders use this tag when first setting up DKIM to ensure the DKIM signature is verifying correctly. DomainKeys Identified Mail (DKIM) defines a domain-level digital signature authentication framework for email by permitting a signing domain to assert responsibility for a … Enabling and using DKIM for your domain, ensures that valid emails sent using Zoho, are not classified as Spam at the recipient end. Here is an example of a DNS selector record. The "i=" tag  domain must not be a subdomain of the "d=" tag. s= is included in the DKIM signature.d= indicates the domain used with the selector record (s=) to locate the public key. Find answers to your questions by searching across our knowledgebase, community, technical documentation and video tutorialsA security ecosystem to harness the power of the cloud The value of each tag indicates a specific piece of information about the sender and public key.

In the lower-left navigation, expand Admin and choose Exchange. The default value is to allow for all algorithms but you can specify sha1 and sha256. The DKIM DNS record is made up of different informational elements that are represented by the use of tag=value pairs. Signers and verifiers must support sha256. Verifiers must also support sha1.k= indicates the key type. It is an attribute for the DKIM Signature and is included in the DKIM header of the email. The DKIM Check tool will perform a DKIM record test against a domain name and selector for a valid published DKIM key record. Access to deal registration, MDF, sales and marketing tools, training and more d= is included in the DKIM signature.p= indicates the public key used by a mailbox provider to match to the DKIM signature.Here is what the full DNS DKIM record looks like for Returnpath.com:. It is part of the DKIM signature, and is inserted into the DKIM-Signature header field. A DKIM selector is part of the DKIM record and it allows publishing multiple DKIM keys on your domain. Missing a required tag in the DKIM DNS record leads to a verification error with the mailbox provider while missing an optional tag does not. There are numerous tags available to a sender; some tags are required and other tags are optional.