Email DNS Checker

A TXT record listing authorized mail servers. Prevents email spoofing. Example: v=spf1 include:_spf.google.com ~all

Adds a digital signature to outgoing emails. Receiving servers verify the signature against the domain's public key in DNS. Selectors like google._domainkey.example.com or selector1._domainkey.example.com.

A TXT record at _dmarc.example.com that tells receiving servers how to handle emails that fail SPF/DKIM. Example: v=DMARC1; p=quarantine; rua=mailto:dmarc@example.com

Directs incoming email to the correct mail servers. Essential for receiving email. Example: aspmx.l.google.com with priority 1.