RV-SOFT Technology® DNSBL/RBL spam lookup service (dnsbl.rv-soft.info)  
   


Am I listed ? 
You can check the status of any server by entering its IP address.

RV-SOFT Technology® DNSBL/RBL reporting system

      The RVS-TECH® (DNSBL) blacklist IP addresses which have transmitted reported email to internet users. RVS-TECH® DNSBL, service providers and individual users then use the DNSBL to block and filter unwanted email. The DNSBL is a fast and automatic list of sites sending reported mail, fueled by a number of sources, including automated reports and RVS-TECH® user submissions. The DNSBL is time-based, resulting in quick and automatic delisting of these sites when reports stop.

What is DNSBL ?

      A DNSBL (DNS-based Blackhole List, Block List, or Blacklist; see below) is a list of IP addresses published through the Internet Domain Name Service in a particular format. DNSBLs are most often used to publish the addresses of computers or networks linked to spamming; most mail server software can be configured to reject or flag messages which have been sent from a site listed on one or more such lists. DNSBL is a software mechanism, rather than a specific list or policy. There are dozens of DNSBLs in existence, which use a wide array of standards for listing and delisting of addresses. These may include listing the addresses of zombie computers or other machines being used to send spam, listing the addresses of ISPs who willingly host spammers, or listing addresses which have sent spam to a honeypot system.

RVS-TECH® DNSBL return codes list

127.0.0.1
  Not listed  
127.0.0.12
  Does not properly handle 5xx errors  
127.0.0.2
  Open relay  
127.0.0.13
  Compromised System - DDoS  
127.0.0.3
  Open proxy  
127.0.0.14
  Compromised System - Relay  
127.0.0.4
  Spam source  
127.0.0.15
  Compromised System - Proxy  
127.0.0.5
  Malware domain  
127.0.0.16
  Compromised System - Autorooter/Scanner  
127.0.0.6
  Phishing messages  
127.0.0.17
  Compromised System - Mass mailing virus  
127.0.0.7
  Spear phishing messages  
127.0.0.18
  Compromised System - Mass mailing phishing  
127.0.0.8
  Fraudulent messages, HOAX's  
127.0.0.19
  Bad reputation  
127.0.0.9
  Blackmail messages  
127.0.0.20
  Mass distribution  
127.0.0.10
  Spam from End User, local PC  
127.0.0.126
  Other reason  
127.0.0.11
  Non-RFC Compliant  
127.0.0.127
  Private record  

Operator

ID: 203CZ13S-000137
RV-SOFT Technology®
203 Czech Republic, EU
Home page: www.rv-soft.eu
E-mail: dnsbl@rv-soft.info


  RV-SOFT Technology®, Radim Axel Vávra ©2013  

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