What is a DNSBL blacklist?

A DNSBL (Domain Name System Blacklist) is a real-time database that lists IP addresses or domains associated with spamming, malware propagation, or other malicious behaviors, used by mail servers to filter traffic.

Why is my IP address blacklisted?

IP addresses are blacklisted if they are detected sending bulk spam emails, hosting malicious content, acting as an open mail proxy, or if they belong to a dynamic IP range assigned to residential connections.

How can I request IP delisting?

To delist an IP, you must first identify which specific database (such as Spamhaus or Barracuda) has blacklisted your IP, resolve the underlying security issue on your server, and then submit a removal request on the blacklist operator's website.

Che cos'è l'archivio delle minacce di sicurezza USOM?

USOM è il Centro Nazionale per la Risposta agli Incidenti Cibernetici che gestisce flussi di minacce in tempo reale.

Blacklist

Scansiona qualsiasi indirizzo IP o nome host confrontandolo con i database di reputazione globali DNSBL (DNS Blacklist).

Esempi:

Controllo Blacklist DNSBL

Verifica gli indirizzi IP nelle blacklist globali in tempo reale per proteggere la reputazione del mittente.

Intelligence Nazionale Minacce USOM

Sincronizzazione diretta con archivi nazionali delle minacce informatiche per individuare nodi dannosi.

Protezione Recapitabilità Server di Posta

Esamina i nodi MX in uscita per evitare rifiuti di posta e classificazioni spam automatiche.

Reputazione Rete Sistema Autonomo

Valuta l'affidabilità dei prefissi BGP, dati proprietari ASN e storico minacce subnet.

Meccanismo di Controllo Blacklist IP DNSBL

A DNSBL IP Blacklist Checker allows you to query multiple Domain Name System Blacklists (DNSBL) and Real-time Blackhole Lists (RBL) to verify if a specific IP address or hostname is flagged for sending spam, hosting malware, or engaging in malicious activity. These list databases are compiled globally to block harmful traffic, improve server security, and prevent spam emails from reaching inbox folders.

If a server's IP address gets listed on a DNSBL, mail servers worldwide may reject outgoing emails, and web browsers or security firewalls might block user access. Getting blacklisted typically happens due to compromised security credentials, open mail relays, infected devices on the network, or spam activities. Regularly auditing your server's IP reputation helps maintain email deliverability and avoid security warnings.

Analisi in corso...