If you are not familiar with systemd you may be surprised about new service listening on network socket – systemd-timesyncd. It’s a time sync service started after Debian update (to stretch). Continue Reading
Some days ago I experienced weird problem with my Enigmail in Icedove e-mail client. When I tried send signed or encrypted message I saw the following error message:
“GnuPG reported an error in the communication with gpg-agent (a component of GnuPG).”
Problem is caused by compatibility issues betwwen GnuPG and Enigmail plugin.
Suppose that you need second full functional Postfix instance on the same machine. You can edit ‘master.cf‘ file of course but this solution does not provide necessary separation level. This tutorial describes how to start second Postfix instance with separate ‘/var/spool/postfix‘ directory (queues, sockets, pids etc.).
In first step you need to create separate working directory for another server instance. Let’s copy:
– /var/spool/postfix directory to /var/spool/postfix2,
– /etc/postfix directory to /etc/postfix2.
Next create a copy of /usr/lib/systemd/system/postfix.service (with new name ‘postfix2.service’) and change following lines in ‘[Service]‘ section. Continue Reading
Rsync is a very powerful backup tool. It can significantly speed up backup process and minimize amount of data transferred during synchronization. In most cases rsync is used to make incremental backups, but it also has another interesting option which gives you ability to keeping old versions of files on backup server. Mentioned option is ‘–backup’ or simply ‘-b’. Continue Reading