Advanced Features

DNS Diagnostics

Monitor DNS records, email authentication, and detect DNS changes.

Part of DNS monitoring — the full answer, the facts and the alternatives in one place.

Updated 2026-02-22

1 min read

DNS

records

SPF

DNS Diagnostics#

A/AAAA records — Your server IP addresses

CNAME records — Aliases and CDN configuration

MX records — Email server routing

NS records — Nameserver configuration

TXT records — Verification and policy records

LemWatch checks critical email authentication records:

SPF — Sender Policy Framework (which servers can send email for your domain)

DKIM — DomainKeys Identified Mail (email signature verification)

DMARC — Domain-based Message Authentication (policy for failed checks)

Missing or misconfigured email authentication can lead to your emails being marked as spam.

LemWatch hashes your DNS records and compares them between checks. If any records change unexpectedly, you'll receive an alert. This helps detect:

Unauthorised DNS modifications

CDN configuration drift

Domain hijacking attempts

Accidental record deletions

Navigate to your site's DNS tab to see current records and change history.

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