Forward-confirmed reverse DNS (FCrDNS), also known as full-circle reverse DNS, double-reverse DNS, or iprev, is a networking parameter configuration in...

computer networks, a reverse DNS lookup or reverse DNS resolution (rDNS) is the querying technique of the Domain Name System (DNS) to determine the domain...

exploited in phishing. Techniques such as forward-confirmed reverse DNS can also be used to help validate DNS results. DNS can also "leak" from otherwise secure...

authorized sending hosts and IP addresses for a domain is published in the DNS records for that domain. Sender Policy Framework is defined in RFC 7208 dated...

DNS records in the reverse DNS can be used for a number of things, including: Most email mail transfer agents (mail servers) use a forward-confirmed reverse...

Virus filtering with ClamAV and AVG ASN lookups and filtering Forward Confirmed reverse DNS validation GeoIP reporting and optional filtering Detection...

personal site. Free and open-source software portal DNS-based blackhole list Forward-confirmed reverse DNS Firewall IP blocking Nullroute TCP WRAPPER - Network...

stringent requirements on other servers wishing to deliver mail. Forward-confirmed reverse DNS must be correctly set for the outgoing mail server and large...

a forward-confirmed reverse DNS entry Senders on block lists Temporary rejection via greylisting methods Mail transfer agents (MTAs) which forward mail...

tools for checking a domain’s DKIM records in DNS as well as for checking forward-confirmed reverse DNS (FCdDNS) for an IP. The SMTP email delivery service...