Merging 2 SPF and DMARC Records

**Operating system: Debian
**OS version: 10

Hello Community,

I’m facing some troubles with E-Mail delivery to all Hotmail/Outlook domains.
I followed a tutorial on linuxbabe (How to Deal With the Microsoft Outlook IP Blacklist - LinuxBabe) because it looks like that all Contabo IP’s are blocked on it.
Now it comes tothat part where I need to put it in my DNS. I already have a SPF and DMARK record from Virtualmin. Now I should put those as well from Sendinblue. But I don’t actually know how to do that.

My SPF record looks like this in Virtualmin:

v=spf1 a mx a:idiomaszmg.com ip4:123.456.7.890 ip6:1111:a222:333:444:0:0:0:1 ~all

And the SPF from Sendinblue looks like this:

v=spf1 include:spf.sendinblue.com mx ~all

And the DMARC from Virtualmin looks like this:

v=DMARC1; p=quarantine; pct=100; ruf=mailto:postmaster@mydomain.com; rua=mailto:postmaster@mydomain.com

Sendinblue requieres this:

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

Even it says in the tutorial it’s not requiered to put the DMARC, but my mails are still going into the Spam folders, because I don’t know how to handle it correctly with the SPF and probably with DMARC as well.

Does anyone know, how to solve it?

Thanks a lot

Hi,
A few notes that may help :wink:

It makes no real difference to the process which DNS provider (solution) you use (your own or third party, say CF).

I learned how to do it from these descriptions back in the day, it will help you too (SPF, DKIM, DMARC, BIMI):

(if you create an account (free plan), you get 25K / per month to manage DMARC reports - the descriptions are very clear and targeted)

These can be used to test when your setup is complete and the new DNS setting has propagated…

https://www.debouncer.com/reverse-dns-check?attempt=2