Update README.md and docs/container-images.md: move up Exim as default service

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

README.md

@@ -63,8 +63,8 @@ Services that run on the server to make the various parts of your installation w
 | [Coturn](https://github.com/coturn/coturn) | ✓ | STUN/TURN server for WebRTC audio/video calls | [Link](docs/configuring-playbook-turn.md) |
 | [Traefik](https://doc.traefik.io/traefik/) | ✓ | Web server, listening on ports 80, 443 and 8448 - standing in front of all the other services. Using your own webserver [is possible](docs/configuring-playbook-own-webserver.md) | [Link](docs/configuring-playbook-traefik.md) |
 | [Let's Encrypt](https://letsencrypt.org/) | ✓ | Free SSL certificate, which secures the connection to all components | [Link](docs/configuring-playbook-ssl-certificates.md) |
-| [ma1sd](https://github.com/ma1uta/ma1sd) | x | Matrix Identity Server | [Link](docs/configuring-playbook-ma1sd.md)
 | [Exim](https://www.exim.org/) | ✓ | Mail server, through which all Matrix services send outgoing email (can be configured to relay through another SMTP server) | [Link](docs/configuring-playbook-email.md) |
+| [ma1sd](https://github.com/ma1uta/ma1sd) | x | Matrix Identity Server | [Link](docs/configuring-playbook-ma1sd.md)
 | [ddclient](https://github.com/linuxserver/docker-ddclient) | x | Dynamic DNS | [Link](docs/configuring-playbook-dynamic-dns.md) |
 
 

docs/container-images.md

@@ -34,8 +34,8 @@ Services that run on the server to make the various parts of your installation w
 | [Coturn](configuring-playbook-turn.md) | [coturn/coturn](https://hub.docker.com/r/coturn/coturn/) | ✓ | STUN/TURN server for WebRTC audio/video calls |
 | [Traefik](configuring-playbook-traefik.md) | [Traefik](https://hub.docker.com/_/traefik/) | ✓ | Web server, listening on ports 80, 443 and 8448 - standing in front of all the other services. Using your own webserver [is possible](configuring-playbook-own-webserver.md) |
 | [Let's Encrypt](configuring-playbook-ssl-certificates.md) | [certbot/certbot](https://hub.docker.com/r/certbot/certbot/) | ✓ | The [certbot](https://certbot.eff.org/) tool for obtaining SSL certificates from [Let's Encrypt](https://letsencrypt.org/) |
-| [ma1sd](configuring-playbook-ma1sd.md) | [ma1uta/ma1sd](https://hub.docker.com/r/ma1uta/ma1sd/) | x | Matrix Identity Server |
 | [Exim](configuring-playbook-email.md) | [devture/exim-relay](https://hub.docker.com/r/devture/exim-relay/) | ✓ | Mail server, through which all Matrix services send outgoing email (can be configured to relay through another SMTP server) |
+| [ma1sd](configuring-playbook-ma1sd.md) | [ma1uta/ma1sd](https://hub.docker.com/r/ma1uta/ma1sd/) | x | Matrix Identity Server |
 | [ddclient](configuring-playbook-dynamic-dns.md) | [linuxserver/ddclient](https://hub.docker.com/r/linuxserver/ddclient) | x | Update dynamic DNS entries for accounts on Dynamic DNS Network Service Provider |
 
 ## Authentication