DMARC
What is DMARC?
Domain-based Message Authentication, Reporting, and Conformance (DMARC) is an email protocol, that controls what happens if a message fails authentication tests (i.e. the recipient server can't verify that the message's sender is who they say they are).
Configure DMARC
First, read DMARC Overview to get an understanding of the concept and the parameters.
Do this for each of the domains you will use for cold emails.
In your DNS provider (e.g. Cloudflare), within DNS configuration, add a text record:
| Type | Name | Content | Proxy | Status |
|---|---|---|---|---|
| TXT | _dmarc | v=DMARC1; p=none; rua=mailto:[email protected]; pct=25; adkim=s; aspf=s | DNS only |
Note: Earlier, you added the email address [email protected] as an alternative address of [email protected]
Every 7 days, edit the _dmarc record and increase these values:
| Days after starting of warming the email account | p value | pct Value |
|---|---|---|
| 0 | p=none | pct=25 |
| 7 | p=none | pct=25 |
| 14 | p=quarantine | pct=50 |
| 21 | p=quarantine | pct=75 |
| 28 | p=reject | pct=100 |