Multiple DKIM and SPF DNS records

Question

We uses both Mailgun and Google App engine mail services to send transaction emails from our products. Both needs DKIM and SPF text record in the DNS server. Is it possible to set multiple DKIM and SPF record in DNS configuration? Will it work?

Northrup

Answer 1

You would only need a single SPF record as you can have multiple rules within it. Check this article for assistance on setting up more than just Google's entries in your SPF record.. Your DKIM signature will specify the subdomain on your domain to check for the signature key. Google Apps uses the google._domainkey subdomain when it specifies the DKIM location to lookup. I'm not sure what mailgun uses but chances are it won't overlap.

Update:

After a quick look around I found this article on Mailgun's website and would think your SPF record should look like this:

v=spf1 include:mailgun.org include:_spf.google.com ~all

Chrischrism

In mailgun, it says to set domain key for hostname mx._domainkey. – Northrup

In my case, Mailgun requires a TXT record for k1._domainkey which clashes with the CNAME record for k1._domainkey as required by MailChimp. – Crowfoot