spfd.libspf2

query SPF (Sender Policy Framework) to validate mail senders

Install

All systems
curl cmd.cat/spfd.libspf2.sh
Debian Debian
apt-get install spfquery
Ubuntu
apt-get install spfquery
image/svg+xml Kali Linux
apt-get install spfquery
Fedora
dnf install libspf2-progs
Windows (WSL2)
sudo apt-get update sudo apt-get install spfquery
Raspbian
apt-get install spfquery
Dockerfile
dockerfile.run/spfd.libspf2

spfquery

query SPF (Sender Policy Framework) to validate mail senders

The Sender Policy Framework (SPF) is one part of the SPF/SRS protocol pair. SPF allows email systems such as Sendmail, Postfix, Exim, Zmailer and MS Exchange to check SPF records and make sure that the email is authorized by the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers and email viruses/worms. This package contains simple utilities that use libspf2 to test and query SPF records.

libspf2-progs

Programs for making

libspf2-2-dbg

library for validating mail senders with SPF (debugging symbols)

libspf2 implements the Sender Policy Framework, a part of the SPF/SRS protocol pair. This package contains the debugging symbols.