79711669

Date: 2025-07-23 09:57:19
Score: 0.5
Natty:
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you can't use a wildcard in this way, the 'd' tag must match exactly in order for the email to verify. Each sub domain must have its own DKIM record.
See https://datatracker.ietf.org/doc/html/rfc6376#section-3.5 for more details on the header field.
You can use one selector by using CNAME delegation eg:
s1._domainkey.a.foo.com. IN CNAME s1._domainkey.foo.com.

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Posted by: Nevstah