diff --git a/deploy.sh b/deploy.sh
index eb1f579..657d1fb 100755
--- a/deploy.sh
+++ b/deploy.sh
@@ -3,6 +3,9 @@
 ### Deploy script for a game server running multiple open-source game servers
 ### This script is intended for Debian 11, but may work on other apt-based
 ### systems too
+###
+### Specify domain name:
+###   DOMAINNAME=example.com ./deploy.sh
 
 set -e
 
@@ -15,6 +18,7 @@ export unvanquished_version="0.52.1"
 export xonotic_version="0.8.2"
 
 export systemuser="onfoss"
+export letsencryptemail="jarno@jarno.ca"
 
 # Install what we need
 apt update -y && apt full-upgrade -y
@@ -59,6 +63,6 @@ firewall-cmd --zone=public --add-service=http --permanent
 firewall-cmd --zone=public --add-service=https --permanent
 firewall-cmd --reload
 
-certbot -n --nginx -d ${LINODE_ID} -d www.${LINODE_ID} --agree-tos -m jarno@jarno.ca
+certbot -n --nginx -d ${DOMAINNAME} -d www.${DOMAINNAME} --agree-tos -m "${letsencryptemail}"
 
 cp -r "$(dirname "$0")"/website/* /var/www/html
diff --git a/scripts/deploy_teeworlds.sh b/scripts/deploy_teeworlds.sh
index 139f215..ef3d7cf 100755
--- a/scripts/deploy_teeworlds.sh
+++ b/scripts/deploy_teeworlds.sh
@@ -16,7 +16,7 @@ sv_map dm3
 sv_scorelimit 20
 sv_timelimit 10
 sv_gametype dm
-sv_motd "HAVE FUN!\nTo change the gamemode you have to reload or change the map to apply the change.\n\n${LINODE_ID}"
+sv_motd "HAVE FUN!\nTo change the gamemode you have to reload or change the map to apply the change.\n\n${DOMAINNAME}"
 sv_max_clients 64
 sv_spectator_slots 16
 
diff --git a/scripts/deploy_unvanquished.sh b/scripts/deploy_unvanquished.sh
index 9cc9423..b358804 100755
--- a/scripts/deploy_unvanquished.sh
+++ b/scripts/deploy_unvanquished.sh
@@ -22,7 +22,7 @@ cat > ${systemuserhome}/unvanquished_home/config/unvanquished.cfg <<EOF
 set server.private 1
 set g_needpass 0
 set sv_hostname "^NUnvanquished ^3onFOSS-LAN"
-set g_motd "^2get news on ^5${LINODE_ID}"
+set g_motd "^2get news on ^5${DOMAINNAME}"
 set sv_allowdownload 0
 set sv_maxclients 24
 set timelimit 0