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How To Configure Dynamic DNS (Fedora Core 4 Setup)
In this howto we will learn how to build a Dynamic DNS Server. Normally when we configure DNS, we use static entries to resolve any FQDN. If we are using DHCP in our network which gives dynamic IPs to every computer that turns on or requests one, then it is not possible to configure DNS statically. For that we should configure our DNS with DHCP in a manner that whenever a computer gets a new IP, its FQDN will be automatically updated with the new IP in DNS. Continue Reading
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Postfix with dkfilter (DomainKeys Implementation)
DomainKeys is an anti-spam software application in development at Yahoo that uses a form of public key cryptography to authenticate the sender’s domain. dkfilter is an SMTP-proxy designed for Postfix. It implements DomainKeys message signing and verification. It comprises two separate filters, an “outbound” filter for signing outgoing email on port 587, and an “inbound” filter for verifying signatures of incoming email on port 25. This document is to describe step by step how to install dkfilter for postfix to deploy domainkeys signing and verification. Continue Reading
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