Alternatives to MultiRBL

A free tool that checks a mail server IP against over 200 DNS blacklists and whitelists. The listings below can replace it for an important use case. Each note says what changes if you switch.

  • MultiRBL

    A free tool that checks a mail server IP against over 200 DNS blacklists and whitelists.

    FreeProprietaryWeb

Replacements

Listings that take over the same core job as MultiRBL.

  • MXToolbox Blacklist Check

    An online tool that tests a mail server IP or domain against over 100 DNS blacklists.

    FreeProprietaryWeb

    MXToolbox Blacklist Check tests over 100 DNSBLs, fewer than MultiRBL, but accepts a domain as well as an IP and can test by sending an email.

  • MXToolbox

    A web-based suite of DNS, MX, SPF, DMARC and blacklist lookups for diagnosing email delivery.

    FreemiumProprietaryWeb

    MXToolbox pairs a 105-list blacklist check with MX, SPF and DMARC lookups in one freemium suite, with prompts for its paid service.

  • GlockApps

    An online email deliverability tester that checks inbox placement, spam scores, blocklists and domain authentication.

    FreemiumProprietaryWeb

    GlockApps checks blocklists alongside inbox placement, spam score and SPF, DKIM and DMARC, though full seed-list testing requires a paid plan.

  • Maileroo Mail Tester

    A free web tool that grades a test email for authentication, spam score, DNS and blacklists.

    FreeProprietaryWeb

    Maileroo Mail Tester checks blacklists as part of grading a real delivered test email, including authentication and DNS, one test at a time.

  • HetrixTools

    A hosted uptime, server metrics and blacklist monitoring service with a free tier and instant alerts.

    FreemiumProprietaryWeb

    HetrixTools monitors blacklists continuously with alerts on a free tier rather than one-off lookups, and needs an account on its hosted service.

Also worth comparing

These listings name MultiRBL as their own alternative, so the relationship runs both ways.

  • Barracuda Reputation Lookup

    Online lookup that checks whether an IP address or domain is listed in the Barracuda Reputation System.

    FreeProprietaryWeb

    MultiRBL checks a mail server IP against over 200 blacklists and whitelists with IPv6 support, but offers no help with removal requests.

  • Sender Score

    Free web tool from Validity that rates the email sending reputation of an IP address or domain.

    FreeProprietaryWeb

    MultiRBL checks an IP against over 200 blacklists and whitelists with IPv6 support, without a score or removal help.

  • Spamhaus IP and Domain Reputation Checker

    Online lookup that shows whether an IP address or domain appears on Spamhaus blocklists.

    FreeProprietaryWeb

    MultiRBL checks a mail server IP against over 200 blacklists and whitelists with IPv6, FCrDNS and Whois checks, but offers no removal help.

Similar software

Related functionality, not a direct replacement.

  • Cisco Talos Reputation Center

    Online lookup for Cisco Talos reputation and threat intelligence on IP addresses and domains.

    FreeProprietaryWeb

  • Mail Tester

    A web tool that scores how likely an email is to be marked as spam.

    FreeProprietaryWeb

  • URLVoid

    Website reputation checker that looks up a domain against more than 30 blocklist services.

    FreeProprietaryWeb

  • Kitterman SPF Validator

    Online SPF tools that retrieve and validate a domain's SPF record or test a draft record.

    FreeProprietaryWeb

  • Google Postmaster Tools

    Google's web dashboard for checking a sending domain's reputation and mail deliverability to Gmail.

    FreeProprietaryWeb

  • intoDNS

    A free web tool that checks a domain's DNS and mail server health and configuration.

    FreeProprietaryWeb