How to add DKIM, SPF and DMARK records to DNS zone

llehirgen

Good morning to everybody.

I need to add DKIM, SPF, TXT and DMARK records to my DNS zone.

I am required to do this in order to send transactional emails via sendinblue from my web application.

For instance, my DMARC record for "_dmarc.example.com" is:

v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

Could you please suggest me how to do it?

The DNS zone has 4 sections: Host, Type, MX and Destination.

As far as I have understood, these sections has to be filled in as follows:

Host: _dmarc.example.com

Type: TXT

Destination: v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

Is that correct?

[gelöschtes Individuum]

Zitat von llehirgen

Host: _dmarc.example.com

Type: TXT

Destination: v=DMARC1; p=none; sp=none; rua=mailto:dmarc@mailinblue.com!10m; ruf=mailto:dmarc@mailinblue.com!10m; rf=afrf; pct=100; ri=86400

Is that correct?

Kind of, the host is only _dmarc.

llehirgen

Then, as far as the DKIM record for mail._domainkey.example.com is concerned, the host is only mail.domainkey?

And the SPF record for example.com should have as host the special character @?

[gelöschtes Individuum]

Zitat von llehirgen

And the SPF record for example.com should have as host the special character @?

Yes.

Zitat von llehirgen

Then, as far as the DKIM record for mail._domainkey.example.com is concerned, the host is only mail.domainkey?

For mail._domainkey.example.com it should be mail._domainkey (underscore!).

llehirgen

@timkoop , Thank you for your support.

What happens if a leave as host the whole mail._domainkey.example.com, instead of mail._domainkey, and _dmarc.example.com in place of _dmarc?

[gelöschtes Individuum]

Zitat von llehirgen

What happens if a leave as host the whole mail._domainkey.example.com, instead of mail._domainkey, and _dmarc.example.com in place of _dmarc?

Some time ago some other forum members had problems with that. Not sure, if netcup "fixes" these records in the background. Could work, but without the domain you are on the safe side.

marpri

Zitat von llehirgen

@timkoop , Thank you for your support.

What happens if a leave as host the whole mail._domainkey.example.com, instead of mail._domainkey, and _dmarc.example.com in place of _dmarc?

From my experience I can say: If you enter mail._domainkey.example.com in the Host field of the netcup-CCP, you will not be able to resolve mail._domainkey.example.com afterwards. Instead the record you created will be mail._domainkey.example.com.example.com.