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I have a domain that sends automated email using Amazon SES, regular email using Google Apps and a monthly newsletter using MailChimp. I want to combine the three suggested SPF records into one, but I am not sure of the correct syntax.

MailChimp suggests: 

v=spf1 mx ptr include:servers.mcsv.net ~all

Amazon SES suggests: 

 v=spf1 include:amazonses.com -all

Google Apps suggests:

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

So I think the correct spf record should be:

v=spf1 mx ptr include:servers.mcsv.net include:amazonses.com include:_spf.google.com ~all

Is this correct?

I am not sure I need or want the mx and ptr, but that is what MailChimp suggested. Does the MX mean I need to add an additional MX record? Also can anyone explain the purpose of PTR, does it mean I also need to add a CNAME record?

Thanks.

user2475479
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  • You don't seem to need an SPF record for Amazon SES as mentioned in their documentation: http://docs.aws.amazon.com/ses/latest/DeveloperGuide/spf.html – smhg Mar 09 '15 at 00:34

1 Answers1

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Your syntax is ok.

Does the MX mean I need to add an additional MX record? Also can anyone explain the purpose of PTR, does it mean I also need to add a CNAME record?

No. It means that all A records for all MX records of your domain is tested in order of MX priority. If client IP matchs one of them, then your SPF pass.

It's is the same wit ptr. The hostname or hostnames for the client IP are looked up using PTR queries. The hostnames are then validated: at least one of the A records for a PTR hostname must match the original client IP. You don't need to add a CNAME.

cuonglm
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