MailMaid DomainGuard™
Understand your sending domain.
Inspect published mail DNS records with clear explanations and visible unknown states.
Available with account serviceWhat’s included
MX and implicit address-record fallbackAccount service required
SPF and DMARC record discoveryAccount service required
DKIM lookup with your selectorAccount service required
BIMI, MTA-STS and TLS reporting recordsAccount service required
Signature, alignment and policy enforcement validationRequires received-message and policy evidence
Your workflow
- 01
Enter a domain and, optionally, its DKIM selector.
- 02
Run a read-only DNS inspection.
- 03
Compare published records with your provider’s setup instructions.
Record presence is not proof that authentication passes. This tool does not change DNS.
Learn with MailMaid Academy™
All guidesAuthentication
SPF softfail is a signal, not a delivery forecast
Inspect the actual sending path before changing an SPF policy.
2 min read
AuthenticationAudit SPF without guessing at DNS
Build an inventory before editing the record.
2 min read
AuthenticationAfter a DNS change, verify what receivers can see
There is no single propagation timer for every sender and resolver.
2 min read