Add mail functionality into the development branch (#12)

* Added basic code for sending emails
+ Added tests for emails
+ Modified README.md to reflect changes to .env file

* [create-pull-request] push formatted files

* Added dkim

* Fixed mistake in docker-compose.yml

Co-authored-by: Stefan <[email protected]>

scripts/dkim.sh

@@ -0,0 +1,33 @@
+#! /bin/bash
+
+
+#load .env file
+
+[[ -f .env ]] || { echo "`tput setaf 1`✗`tput sgr0` Could not find .env file are you in the correct directory (you should be in the server directory)"; exit 1;}
+
+set -o allexport
+[[ -f .env ]] && source .env
+set +o allexport
+
+#static variables
+NC='tput sgr0' #No Color
+GREEN='tput setaf 2'
+RED='tput setaf 1'
+
+
+#check dependencies
+command -v opendkim-genkey >/dev/null 2>&1 || { echo >&2 "`$RED`✗`$NC` Opendkim not installed install with your favorite package manager (opendkim-tools | opendkim-utils)"; exit 1;}
+
+#generate dkim keys
+mkdir -p ./host/keys
+echo "`$GREEN`✓`$NC` Created folder"
+
+cd ./host/keys
+opendkim-genkey -b 2048 -h rsa-sha256 -r -v --subdomains -s mail -d mail.$DOMAIN
+sed -i 's/h=rsa-sha256/sha256/' mail.txt
+mv mail.private mail.$DOMAIN.private
+mv mail.txt mail.$DOMAIN.txt
+
+echo "`$GREEN`✓`$NC` Generated dkim keys"
+
+exit 0