To extract all destinations (i.e., the recipients)
from the Postfix mail queue (mailq), you can use the
following Bash one-liner:
mailq | awk '/^[A-F0-9]/ {in_msg=1; next} in_msg && /^[ \t]*[^ ]+@[^ ]+/ {print $1}' | sort | uniq
E ...
Here is a step by step guide to configure OpenDKIM with Postfix
on Debian 12 bookworm.
We're gonna modify default configuration files to keep only minimal or required settings.
Install openDKIM
sudo apt-get install opendkim opendkim-tools
Conf ...
Ever wanted to delete all messages from Postfix queue by sender email address and recipient domain ?
Today, I did ... and below you can find a handful script for this purpose.
Tools needed: grep, awk, mailq and postsuper.