DNS records do not clean your list, but they do shape whether your email looks trustworthy and properly configured when it arrives.
The records that matter most
For email, the practical set usually includes:
- MX records
- SPF
- DKIM
- DMARC
These records help determine whether receiving systems can trust your sending setup.
Why this matters alongside list hygiene
Good deliverability usually needs both:
- a legitimate, authenticated sending setup
- a list that is worth sending to
If either side is weak, campaign quality suffers.
The practical takeaway
Fix DNS and authentication for sender trust. Use MailCull for recipient-quality cleanup. Those two layers support each other.