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Does DKIM cover subdomains?
Sometimes you can add a DKIM TXT record directly to the subdomain the same way you do for a domain. However, some domain providers don’t let you add TXT records for subdomains. In this case, to use DKIM for the subdomain, add a modified TXT record to the parent domain.
Can we use multiple active DKIM keys for the same domain?
We cannot have two keys with the same selector value for the same domain. This can prevent us from publishing the new CNAME record. In this scenario the DKIM records can be created but they will not be able to be activated. The new DKIM keys should be created with the new unique selectors.
Does SPF apply to subdomains?
The answer is no. SPF policy discovery works differently than DMARC policy discovery in this regard: if SPF is unable to find an SPF record on a subdomain, it won’t go up to try the organizational domain; instead, SPF will return none as the check result.
Can you add a TXT record to a subdomain?
Adding a Google TXT record for a subdomain Navigate to the Subdomain and Certificates card. Select your instance, then open the details of the subdomain to which you would like to add a DNS record. Click the Add TXT record button, then enter the value generated in G Suite Admin tools.
How to add DKIM for a subdomain domain?
Lets say we want to add DKIM for subdomain market.domain.com. My understanding is that we need to create a TXT record with the name “market” only. Is that right?
Why do I need multiple DKIM key pairs?
Multiple DKIM selectors and private/public key pairs are usually created for these reasons: 1 a domain uses multiple email delivery services to send emails, in which case, multiple DKIM selectors and private/public key pairs must be used to separate these services.
How to set up DKIM and SPF records?
For each domain configure DKIM relative to that domain and an SPF record for that domain. It is useful to define an SPF record for the mail server domain like v=spf1 a -all. This allow SPF validation of the host address. You should also consider configuring DMARC records.
How does DKIM work in Microsoft Office 365?
Since the digital signature stays with the email message as part of the email header, DKIM works even when a message has been forwarded. NOTE (DNS record): For DKIM – CNAME record (some domain hosters do not offer the possibility to create a CNAME record – in this case – the DKIM will not work for Office 365 ).