The Validity Sender Score Return Path Blocklist (RPBL) is a high-impact IP blocklist (or blacklist) that lists sending IPs based on evidence of abusive behavior, such as sending to spam traps, failing email authentication, or sending from botnets.
Check if you are listed on Validity Sender Score Return Path Blocklist (RPBL)
What is Validity Sender Score Return Path Blocklist (RPBL)?
The Validity Sender Score Return Path Blocklist (RPBL) is an IP address based blocklist that identifies sending practices indicative of spam. The blacklist's algorithm analyzes sending behavior in real time, using data from spam traps, message volume, and user complaints to score IP addresses. Listings on this blacklist (or blocklist) occur when the system detects messages from an IP that contain spam indicators, such as suspicious attachments or authentication failures.
The blocklist is operated on the zone bl.score.senderscore.com and is utilized by a wide range of mailbox providers and security vendors, both in the United States and internationally, as part of their email filtering policies. This means that a listing can have a broad impact on your ability to reach the inbox. The primary reasons for an IP address being added to this blacklist include:
Sending emails to spam trap addresses.
Transmitting high volumes of mail to addresses that do not exist.
Sending email campaigns from botnets.
Failing email authentication checks, such as SPF or DKIM, or having authentication discrepancies.
Achieving a Sender Score of 0.
Who runs Validity Sender Score Return Path Blocklist (RPBL)?
The RPBL blacklist is run by Validity. For more than two decades, Validity has provided solutions that help tens of thousands of organizations worldwide to target, contact, engage, and retain customers by using trustworthy data as a significant advantage.
How do I get removed and delisted from Validity Sender Score Return Path Blocklist (RPBL)?
To get your IP address removed from this blocklist, you must first resolve the underlying issue that caused the listing. Once you have identified and corrected the problem, you can request an immediate, temporary removal using the RPBL Blocklist Remover page. This temporary delisting allows you time to fully investigate and fix the root cause. When you submit a request, Validity will share the reason for your listing. It is crucial to address this reason, as your IP will likely be listed on the blacklist again if the problem persists.
Tips for staying off this blocklist
Use opt-in or confirmed opt-in permission methods for all new subscribers to ensure they want to receive your mail.
Keep your complaint rates low by only sending relevant and engaging content.
Practice good list hygiene and suppression to remove invalid addresses and avoid spam traps.
Ensure your sending IP address has a unique, non-generic reverse DNS (PTR) record.
Avoid sending email from a dynamic IP address.
What's the impact of being listed on Validity Sender Score Return Path Blocklist (RPBL)?
The impact of being listed on the Validity Sender Score Return Path Blocklist (RPBL) is high. Because this blocklist is used by many mailbox providers in the U.S. and internationally, a listing can significantly affect your email deliverability. Mailbox providers that use the RPBL may filter or block your emails, preventing them from reaching the intended recipients. The final filtering decision is at the discretion of each list user, but a listing is a strong negative signal that can harm your sender reputation.
Other Validity Sender Score Return Path Blocklist (RPBL) blocklists
Spamhaus
0Spam
Cisco
NoSolicitado
URIBL
abuse.ro
ALPHANET
Anonmails
Ascams
BLOCKEDSERVERS
Calivent Networks
EFnet
JustSpam
Kempt.net
NordSpam
RV-SOFT Technology
Scientific Spam
Spamikaze
SpamRATS
SPFBL
Suomispam
System 5 Hosting
Team Cymru
Validity
www.blocklist.de Fail2Ban-Reporting Service
ZapBL
2stepback.dk
Fayntic Services
ORB UK
technoirc.org
TechTheft
