Enterprise Email Deliverability, SPF/DKIM/DMARC & Authoritative DNS Auditor

Evaluate your domain’s SPF 10-lookup ceiling, DKIM key strength, DMARC enforcement policy (`p=none` vs `p=quarantine` / `p=reject`), and nameserver geographic diversity.

Web Application ROI Estimator Cloud & Email TCO Calculator 301 Cutover & SEO Validator DNS & Mail Deliverability Auditor

Domain & Mail Authentication Parameters

Corporate Domain Name

SPF Record terminates with strict -all (Hard Fail) and ≤ 10 DNS lookups2048-bit RSA DKIM cryptographic signing active on outbound MTADecoupled MX Gateway (mail server does NOT share IP with public website)Geo-Redundant Authoritative BIND Nameservers (NS20 VA, NS30 IL, NS40 AZ)

DMARC Policy Enforcement Level:

AUTHENTICATION & DELIVERABILITY SCORE

96 / 100

; Authoritative BIND Zone Blueprint for example-enterprise.com
$ORIGIN example-enterprise.com.
$TTL 3600
@   IN  NS  ns20.greentreehosting.net.
@   IN  NS  ns30.greentreehosting.net.
@   IN  NS  ns40.greentreehosting.net.
@   IN  MX  10 mx.greentreemail.com.
@   IN  TXT "v=spf1 include:spf.greentreemail.com -all"
_dmarc IN TXT "v=DMARC1; p=quarantine; rua=mailto:dmarc@example-enterprise.com; pct=100"