What dns records should be used to send mail?

Question

Domain Name System

Hello everyone,

at the moment, which of these three types of SPF/DMARC/DKIM records or a combination of them should be used so that emails sent from the company's domain do not end up in spam? Or is it desirable all at once?

best regards,
Vadim

Answer 1

All at once. SPF is mandatory in the first place - most mail servers can refuse to accept emails without checking for spam. The other two will give + to the chances that an email will not be considered spam, and DMARC will allow you to control when and which emails end up in spam, since many major mail systems report DMARC.
To check that everything is fine with my mail domain, I usually used this resource https://mxtoolbox.com/emailhealth