Add log in cert renew script

deploy_configs/mail4one_cert_copy.sh

@@ -2,13 +2,11 @@
 
 #  certbot deploy hook to copy certificates to mail4one when renewed.
 #  Initial setup, Install certbot(https://certbot.eff.org/) and run `certbot certonly` as root
+#  Doc: https://eff-certbot.readthedocs.io/en/latest/using.html#renewing-certificates
 #
 #  This file is supposed to be copied to /etc/letsencrypt/renewal-hooks/deploy/
 #  Change the mail domain to the one on MX record
 
-set -x
-
-
 if [ "$RENEWED_DOMAINS" = "mail.mydomain.com" ]
 then
 		mkdir -p /var/lib/mail4one/certs
@@ -17,4 +15,5 @@ then
 		cp "$RENEWED_LINEAGE/fullchain.pem" /var/lib/mail4one/certs/
 		cp "$RENEWED_LINEAGE/privkey.pem" /var/lib/mail4one/certs/
 		systemctl restart mail4one.service
+		echo "$(date) Renewed and deployed certificates for mail4one" >> /var/log/mail4one-cert-renew.log
 fi