Docker Apps for Warming Up SMTP IP Address
One of the difficulties in setting up a new mail server is ensuring IP address reputation. Sometimes, I need a bunch of IP address to be setting up as SMTP…
Rsyslog Warning on Docker : rsyslogd: imklog: cannot open kernel log (/proc/kmsg)
I got this warning message while building Docker images and trying to start rsyslog inside Docker : rsyslogd: imklog: cannot open kernel log (/proc/kmsg): Operation not permitted. rsyslogd: activation of…
Automatically Setting Timezone on Dockerfile
As I lives in Indonesia, I would prefer to use GMT+7 as my selected timezone. It will make my log easier to check and also easier to find events at…
Create a Crontab Through a Script
Single line script for creating crontab entry : (crontab -l 2>/dev/null; echo “*/15 * * * * /path/to/script.sh 2>&1”) | crontab – Ref : https://stackoverflow.com/questions/4880290/how-do-i-create-a-crontab-through-a-script
Error debconf: unable to initialize frontend: Dialog
I got an error message while building my new docker images to set default setting on Postfix configuration : debconf: unable to initialize frontend: Dialog debconf: (Dialog frontend will not…