| Required/Optional | Port Number | TLS/SSL/PLAIN | Description |
|---|
| optional | 80 | PLAIN | HTTP redirect to HTTPs port 443 |
| required | 443 | SSL | Access to BlueMind |
| required | 25 | PLAINTLS | Email delivery Supports SMTP authentication |
| optional | 587 | TLS | Sends emails from thick clients SMTP authentication required Prefer this port over port 25 for thick client configurations |
| optional | 465 | SSL | Sends emails from thick clients SMTP authentication required Prefer this port over port 25 for thick client configurations |
| optional | 143 | PLAIN/TLS | IMAP access for thick clients |
| optional | 993 | SSL | IMAP access for thick clients |
| optional | 110 | PLAIN/TLS | POP access for thick clients - not recommended |
| optional | 995 | SSL | POP access for thick clients - not recommended |
| optional | 5222 | PLAIN/TLS | IM access for thick clients |
| optional | 5223 | SSL | IM access for thick clients |
| optional | 5269 | TLS | XMPP server-to-server communications for interconnection with XMPP from other domains |
