Free IP & Domain Reputation Scorecard
Get a one-shot reputation verdict for any IP or domain: reverse-DNS presence, forward-confirmed reverse DNS validated against all forward records, a live blocklist sweep across the highest-severity zones, and a single grade from EXCELLENT to LISTED you can act on.
IP & Domain Reputation Scorecard
Check your mail server’s public reputation footprint: verify Reverse DNS (PTR), validate Forward-Confirmed Reverse DNS (FCrDNS), and audit real-time blocklist listings.
Tool Overview: What It Does & Core Purpose
The **AutoSMTP IP & Domain Reputation Scorecard** provides an empirical breakdown of your outbound sending IP’s credibility across the global mail ecosystem. It answers the fundamental questions receiving MTAs evaluate upon socket connection: Does this IP possess a valid Reverse DNS (PTR) record? Does that PTR hostname resolve back to the exact same IP (Forward-Confirmed Reverse DNS, or FCrDNS)? And is this IP currently active on Tier-1 DNSBL blocklists like Spamhaus ZEN, Barracuda, or SORBS?Key Advantages & Architectural Benefits
Advantage
**Forward-Confirmed Reverse DNS (FCrDNS) Testing:** Validates the gold standard of MTA identity required by Google, Yahoo, and Microsoft.
Advantage
**Simultaneous Multi-Zone DNSBL Probing:** Rapid concurrent resolution against top commercial and community anti-spam registries.
Advantage
**Dual-Input Flexibility:** Accepts either raw IPv4 server addresses or sending domains with automated A-record resolution.
Advantage
**Actionable Deliverability Verdicts:** Pinpoints whether deliverability issues stem from blocklist listings or DNS infrastructure misconfigurations.
Email Marketing & Cold Outreach Integration
How This Tool Accelerates Email Campaigns & Deliverability
Without valid reverse DNS, enterprise receivers like Gmail drop SMTP connections immediately with `550-5.7.1` error codes. AutoSMTP’s automated bare-metal cluster deployment guarantees that every provisioned IPv4 address has synchronized rDNS/PTR and FCrDNS alignment out of the box, preserving pristine IP reputation.Frequently Asked Questions (FAQs)
What is Forward-Confirmed Reverse DNS (FCrDNS)? ▾
FCrDNS is a two-way identity check: the receiver looks up the IP’s PTR record to get a hostname (e.g. `smtp.domain.com`), and then resolves that hostname’s A record back to an IP. If the resulting IP matches the original sender, the check passes. Major providers require this to prevent IP spoofing.
Why is my sending IP listed on SORBS or Backscatterer? ▾
SORBS and Backscatterer list IPs that have sent out-of-office autoreplies to forged senders or open relays. Delisting typically requires submitting a request through the registry’s automated removal portal after verifying relay security.
Can a domain name have a reverse DNS record? ▾
No. Reverse DNS belongs exclusively to IP addresses. However, your domain’s mail exchanger hostnames (e.g. `mail.domain.com`) must match the PTR records configured on your servers.
How does IP reputation differ from domain reputation? ▾
IP reputation tracks the physical sending hardware and its historical volume consistency. Domain reputation tracks your brand name across headers, links, and content. High deliverability requires pristine standing in both.
Free tools help you audit and optimize individual elements, but sustained enterprise email delivery requires dedicated bare-metal infrastructure. AutoSMTP replaces fragile shared relays with private bare-metal PowerMTA and KumoMTA clusters configured automatically in 15 minutes.
Turnkey Dedicated Bare-Metal Clusters
Provisions fully licensed PowerMTA/KumoMTA clusters on enterprise bare-metal with flat predictable pricing and zero third-party markups.
Automated Gas-Pedal IP Warming
Monitors Google Postmaster spam ratios (<0.10%) and real-time deferrals across clean IPv4 subnets to scale daily send limits safely.
Native FBL & Socket Interceptors
RFC 5321 in-band 550 bounce suppression + automated Yahoo/Outlook CFL ingest to protect sender score automatically.
Fully Managed DNS & Auth
Pre-configured rDNS/PTR, SPF, 2048-bit DKIM, strict DMARC, and BIMI integration synchronized across your domain portfolio.
Deploy Your Dedicated Email Infrastructure Today
Stop risking your sender reputation on shared pools. Get dedicated IPv4 subnets, custom reverse DNS, and automated deliverability engineering.
Key capabilities
- Set-based FCrDNS verification
- High-severity zone quick sweep
- IP↔domain both accepted (auto-resolved)
- Plain-English verdict tiers.
Frequently asked questions
What makes an IP ‘EXCELLENT’?
Valid PTR that forward-confirms, zero listings in the high-severity sweep. Anything less returns the specific reason.
How is this different from the Blacklist Checker?
Reputation Check is the fast verdict; the Blacklist Checker is the exhaustive 29-zone sweep.