DKIM key generator for Postfix
ActivePublic
Actions

Authored by valerio.bozzolan on Jan 6 2021, 15:12.

Project Tags

Referenced Files

	F1458945: DKIM key generator for Postfix
	Jan 6 2021, 15:17

	F1458944: DKIM key generator for Postfix
	Jan 6 2021, 15:12

Subscribers

None

	#!/bin/bash
	#
	# Generate a DKIM key for Postfix
	#
	# Project info
	# https://gitpull.it/w/kiss_libre_hosting_panel/
	#
	# Updates
	# https://gitpull.it/P13
	#
	# This script is in public domain.
	# 2020 - Valerio Bozzolan
	###################################################

	# die in case of errors
	set -e

	# expected pathnames
	POSTFIX=/etc/postfix
	DKIM="$POSTFIX"/dkim
	KEYTABLE="$DKIM"/keytable
	SIGNINGTABLE="$DKIM"/signingtable
	DKIM_KEYS="$DKIM"/dkimkeys

	# no domain no party
	domain="$1"
	if [ -z "$domain" ]; then
	echo "Please insert the domain name and press enter"
	read domain
	fi

	# no selector no party
	selector="$2"
	if [ -z "$2" ]; then
	date="`date +%Y%m`"

	# make domain shorter
	domainshort="${domain:0:10}"

	# strip dots
	domainshort=$(echo "$domainshort" \| sed 's/\.//g')

	selector="$domainshort""$date"
	fi

	# expected pathnames
	keytablename="$selector"key
	expected_filename_prv="$selector".private
	expected_filename_txt="$selector".txt
	expected_filepath_prv="$DKIM_KEYS"/"$expected_filename_prv"
	expected_filepath_txt="$DKIM_KEYS"/"$expected_filename_txt"

	# key generation
	opendkim-genkey --verbose --bits=1024 "--domain=$domain" "--selector=$selector" "--directory=$DKIM_KEYS"

	# this line should be at the beginning of the file
	sed -i "1s/^/*@$domain $keytablename\n/" "$SIGNINGTABLE"

	# this line can be appended at the end of the table
	echo "$keytablename $domain:$selector:$expected_filepath_prv" >> "$KEYTABLE"

	# eventually fix privileges
	chown --verbose opendkim: "$expected_filepath_prv" "$expected_filepath_txt"

	cat "$expected_filepath_txt"
	echo
	echo "Done!"
	echo " systemctl reload opendkim"
	echo " opendkim-testkey -d '$domain' -s '$selector' -vvv"

Event Timeline

valerio.bozzolan created this paste.Jan 6 2021, 15:12

valerio.bozzolan edited the content of this paste. (Show Details)Jan 6 2021, 15:17

valerio.bozzolan mentioned this in T690: Fornire record DKIM.Jan 6 2021, 15:20

DKIM key generator for PostfixActivePublicActions

Event Timeline

DKIM key generator for Postfix
ActivePublic
Actions