While I was cleaning up my Ubuntu Email server configuration, I consolidated my login security. My SMTP server is Exim and my IMAP server is Dovecot. Mail User Agents (MUAs) use authentication over TLS encrypted connections to access IMAP and SMTP. Both programs had their own password configuration.
Exim includes Dovecot in its supported authentication mechanisms. This enables one authentication mechanism to be used for both SMTP and IMAP (or POP3). This post also includes configuration details for forced authentication over the Submission port. Continue reading
We are quickly running out of IPv4 addresses. Are you ready for World IPv6 Day on June 8th, 2011? I have prepared my configuration on OpenWRT and Ubuntu. This includes configuring DNS using bind, email using Exim, and a Squid web proxy.
Having verified that I could establish IPv6 connectivity, I chose to improve my connectivity. This started with getting a tunnel from Hurricane Electric and updating my configuration. I then updated my bind server and Exim mail server support IPv6 addresses. This posting updates and continues from my post on Implementing IPv6 6to4 on OpenWRT. Review it for information on creating a tunnel and running radvd on OpenWRT. Continue reading