| Port | Dienst | Protokoll |
|---|---|---|
| 22 | SSH | encrypted |
| 25 | SMTP | starttls |
| 80 | HTTP → 443 | redirect |
| 110 | POP3 | starttls |
| 143 | IMAP | starttls |
| 443 | HTTPS (Traefik) | tls 1.2+ |
| 465 | SMTPS | implicit tls |
| 587 | Submission | starttls |
| 993 | IMAPS | implicit tls |
| 995 | POP3S | implicit tls |
| 4190 | ManageSieve | starttls |