What is RV-SOFT Technology RVS-TECH DNSBL?
The RV-SOFT Technology RVS-TECH DNSBL is a DNS-based blacklist that lists IP addresses reported for sending unwanted email. Internet service providers and system administrators can use this blacklist (or blocklist) to filter and block emails from sources listed on it. The list is compiled from various sources, including automated systems and user submissions of spam.
A key feature of this blocklist is its time-based nature, which allows for automatic and rapid delisting once an IP address stops being the source of reported emails. When a mail server checks an IP against this DNSBL, it receives a specific return code indicating the reason for the listing. These codes provide insight into the nature of the issue.
RVS-TECH® DNSBL return codes:
- 127.0.0.2: Open relay
- 127.0.0.3: Open proxy
- 127.0.0.4: Spam source
- 127.0.0.5: Malware domain
- 127.0.0.6: Phishing messages
- 127.0.0.7: Spear phishing messages
- 127.0.0.8: Fraudulent messages, HOAX's
- 127.0.0.9: Blackmail messages
- 127.0.0.10: Spam from End User, local PC
- 127.0.0.11: Non-RFC Compliant
- 127.0.0.12: Does not properly handle 5xx errors
- 127.0.0.13: Compromised System - DDoS
- 127.0.0.14: Compromised System - Relay
- 127.0.0.15: Compromised System - Proxy
- 127.0.0.16: Compromised System - Autorooter/Scanner
- 127.0.0.17: Compromised System - Mass mailing virus
- 127.0.0.18: Compromised System - Mass mailing phishing
- 127.0.0.19: Bad reputation
- 127.0.0.20: Mass distribution
Who runs RV-SOFT Technology RVS-TECH DNSBL?
The RV-SOFT Technology RVS-TECH DNSBL is operated by RV-SOFT Technology®, an organization based in the Czech Republic, EU. They manage and maintain the infrastructure for this specific blacklist.
How do I get removed and delisted from RV-SOFT Technology RVS-TECH DNSBL?
Removal from the RV-SOFT Technology RVS-TECH DNSBL is an automated process. There is no manual delisting form or request page. The system is time-based, which means an IP address will be automatically removed after reports of malicious activity from that IP stop.
To ensure you are delisted, you must first resolve the underlying issue that caused the listing. Steps to take include:
- Identify the cause: Use the return codes to understand why you were listed. This could be anything from a compromised system sending spam to a misconfigured mail server.
- Secure your systems: If your system was compromised, ensure it is cleaned and secured against future attacks. Change all passwords and update software.
- Correct configurations: If the listing is due to an open relay, open proxy, or non-RFC compliant behavior, correct your server's configuration.
- Stop the outbound mail: Ensure that no more unwanted emails are being sent from your IP address. Once the mail flow that triggered the listing stops, the automatic delisting process will begin.
What's the impact of being listed on RV-SOFT Technology RVS-TECH DNSBL?
The impact of being on the RV-SOFT Technology RVS-TECH DNSBL is considered low. It is not as widely used as some of the larger, more influential blocklists in the industry. However, a listing on any blacklist can still cause email delivery problems. Certain mail providers or individual system administrators may use this list, which would result in your emails being blocked or sent to the spam folder for their users. While not a critical threat to your overall email deliverability, it is a problem that should be addressed to ensure maximum reach.
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
