Server Name Indication (SNI) for qmail and dovecot
Server Name Indication (SNI) is a TLS extension that enables a server to present different certificates based on the hostname requested by the client during the TLS handshake. In modern email environments, multiple domains frequently share the same IP address for SMTP,...
Playing with qmail-spp
qmail-spp provides plug-in support for qmail-smtpd. It allows you to write external programs and use them to check SMTP command argument validity. The plug-in can trigger several actions, like denying a command with an error message, logging data, adding a header...
Migrating from Linux-VServer to LXC (Slackware)
Tired of the nightmares of remotely compiling the kernel with Linux-VServer, a software that I'm pleased with despite of some lack of documentation, these days I was playing with LXC, which is included and supported by Slackware and for which the Linux...
How to backup a server with rsync via ssh login without password
Rsync is a fast and extraordinarily versatile file copying tool. It can copy locally, to/from another host over any remote shell, or to/from a remote rsync daemon.It offers a large number of options that control every aspect of its behavior and...
