Postfix SMTP relay

For home servers I funnel all emails through a single Postfix SMTP relay via a Gmail account. (On Debian 9 you need to install libsasl2-modules first.)   Create /etc/postfix/sasl_passwd file with following content (replace the obvious variables): [smtp.gmail.com]:587 $USER@gmail.com:$PASS   Then generate Postfix map file. This will create /etc/postfix/sasl_passwd.db file. …..

AMD or Intel?

By looking at this site’s main picture (AMD Threadripper 1950X) you probably think I’m an AMD fan. You are right, I am an AMD fan. But I’m also an Intel fan. I don’t really have a preference as long as at the time I’m buying a new CPU whoever offers …..

Transfer Let’s Encrypt certificates to new server

It’s very easy to move Let’s Encrypt SSL certificates to new server. If you don’t know who Let’s Encrypt certificate authority is… read up here. All you need to do install Let’s Encrypt on new serer first, then transfer the following directories to same location on new server. /etc/letsencrypt/archive/$SITE /etc/letsencrypt/live/$SITE …..

Graph MySQL in Munin

Munin by default probably doesn’t graph MySQL data. It might if you installed Debian’s default MySQL server. Since I’m using MySQL’s repo and installed version 5.7 on my server… Munin doesn’t detect on install and doesn’t monitor my MySQL server. The default setting reading /etc/mysql/debian.cnf file using MySQL user “debian-sys-maint” …..

No more forums

Was using a forum to keep track of my sysadmin stuff. Since I had no users it’s pointless keep paying for forum software support. Using a regular WordPress for a site is better. Easier to maintain and better to keep my sysadmin stuff on record.