WordPress plugin intelligence profile

MDI Spam Sheriff (for GravityForms)

Blocks spam on Gravity Forms by checking every submitted email domain's registration age via RDAP; recently-registered domains are blocked.

WP PlugIndex snapshot

Current directory snapshot

Tested up to WordPress 7.1
Current version1.0.1
WordPress coverageTested up to WordPress 7.1
Minimum stackWP 5.8 · PHP 7.4
Directory statusactive
Last directory update31 Aug 20262mo ago
Active installationsNewAdoption metric — not a quality score
WordPress.org ratingNo WordPress.org ratings yet
Official packageDirect from WordPress.org

Repository metrics are context, not quality scores. Active installations measure adoption and can strongly reflect a plugin’s age and historical popularity. Ratings, recent updates and “Tested up to” metadata also do not guarantee modern code, error-free operation, security, feature completeness or suitability for a particular site. Why active installs don’t tell the whole story →

WP PlugIndex currently records MDI Spam Sheriff (for GravityForms) version 1.0.1 as active, updated 2mo ago and tested up to WordPress 7.1.

Overview

About this plugin

Every Email-type field on every enabled Gravity Forms form is checked on submit: the domain’s registration date is looked up via RDAP (the free, keyless, standardized successor to WHOIS). If it’s younger than your configured threshold (default 160 days), the submission is blocked with a configurable message.

If the RDAP lookup itself is inconclusive (timeout, unsupported TLD), the plugin falls back to a basic MX/A/AAAA record check – if the domain has no mail-capable DNS at all, it’s blocked; otherwise it’s allowed through rather than blocking on missing information.

External services

This plugin performs domain age verification by querying RDAP (Registration Data Access Protocol) services, the standardized successor to WHOIS.

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IANA RDAP Bootstrap Registry

This plugin fetches a public bootstrap file from IANA to determine which RDAP server is authoritative for a given domain’s TLD. This happens automatically whenever a domain needs to be looked up and no cached bootstrap data exists (cached for 7 days).

Data sent: none beyond the standard HTTP request to fetch the static file (no user data is sent).

org/en/data-protection/terms-of-service

org/en/data-protection/privacy-policy

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RDAP registry servers (varies by TLD)

When a user submits an email address, this plugin extracts the domain portion and sends it to the RDAP server responsible for that domain’s TLD, in order to retrieve the domain’s registration date and estimate its age. This is used as a fraud/spam signal in form submissions.

g. com”) — never the full email address or local part — and only when a domain hasn’t been checked in the last 30 days (cached).

g. ), as determined by IANA’s bootstrap registry.

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WordPress.org metadata

Plugin tags

Topics listed for this plugin in the WordPress.org directory.

  • email validation
  • gravity forms
  • rdap
  • security
  • spam
Compatibility & maintenance

Compatibility & maintenance

Tested with WP 7.1

Marked as tested with the current WordPress 7.1 release.

Current WordPress releaseWordPress 7.1
WordPress.org Tested up to7.1
Minimum requirementsWordPress 5.8 · PHP 7.4
Update activity31 Aug 20262mo ago

“Tested up to” is directory metadata supplied by the plugin author. WP PlugIndex does not turn an older declaration into a claim that the plugin is incompatible.

Changes recorded by WP PlugIndex

Recent tracked changes

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