EsvaLabs maintains the reputation services used by LibraCyber email security products. This article explains what those services are and how to ask for a review if you believe a resource of yours has been wrongly penalised.
Reputation services
- Phishing site database — blacklist of known phishing sites, a list of suspected phishing sites and a whitelist of safe sites.
- URI Sandbox — URL rewriting module plus a web service that analyses the target page in real time, as soon as the user clicks the link.
- Graymailing sender reputation database — real-time DNS blocklist lookup that returns a reputation score for the sender domain and IP address; the score contributes to the final anti-spam score.
- Malware domains database — domains detected by the URI Sandbox service plus curated public sources, with strict expiration policies to limit false positives on compromised but legitimate sites.
- Fresh domains database — recently registered domains, split into three groups: registered within the last 7, 14 and 28 days.
Blacklist lookup tool
The lookup tool checks whether an IP address or a domain is currently listed in the live LibraCyber blacklists. It runs a live query and is therefore hosted outside the Help Center:
Open the blacklist lookup tool
Removal request
If you believe that your website, domain or IP class has been wrongly penalised, you can file a removal request and we will review the reputation score.
Removal requests are normally analysed within 24 hours. Duplicate requests for the same resource are ignored.
Request access to the Indicators Of Compromise
The IOCs described above are available to third parties free of charge. Registration is required in order to access the service.
How listing decisions are made
Our reputation services combine several inputs: the collaborative false-positive and false-negative reporting system, automated processing of public information, heuristics on website behaviour run by the URI Sandbox, and traditional detectors and spamtraps. The goal is to minimise false positives while remaining effective against known and unknown threats.