![dkim signature mdaemon dkim signature mdaemon](https://help.sendinblue.com/hc/article_attachments/360018621539/DKIM_EN_5-1024x570.png)
Note that the values of the optional tags are automatically generated, so there’s no need to calculate the seconds yourself. Its format is the same as above, but the value must be greater than the time. “x=” this is the DKIM signature expiration time.For example, if you send an email message on, at 07:42:40 UTC, the “t=” value will be 1,620,373,360. The format is the number of seconds from 00.00.00 seconds on 1 January 1970 in the UTC zone. These are the optional tags recommended in DKIM signatures to help identify spam: Some optional tags are not compulsory in a DKIM signature but can help with providing additional security measures. “bh=” illustrates the computed hash of the mail message.“h=” specifies the list of headers used to create the hash data.“s=” indicates the selector record name, used with the domain name identity to locate the public key in DNS.“a=” reflects the algorithm of the signature.“v=” is the version of the signature specification.
#Dkim signature mdaemon verification#
There are required tags that all DKIM signatures must have, as the verification process would fail without them. A tag is a single letter, followed by an equal sign, while the value gives specific details of the email sender, the message, and the public key location. The information presented in a DKIM signature header field uses tag=value pairs. The DKIM signature header is in a unique textual string format, also known as a hash value. The DKIM signature is a special header containing essential information added to an email message.
![dkim signature mdaemon dkim signature mdaemon](https://www.socketlabs.com/wp-content/uploads/2019/04/Basic-Test-Message-with-a-custom-DKIM-signature.jpg)
Adding DKIM Records From Other Email Provider.Adding DKIM Record Using Hostinger’s Email Service.