The generic Email Client Configuration for residential email services (@pt.lu) applies for most common email client software.
However, some email clients are requiring a specific configuration, which is explained in dedicated notes.
Generic Email Configuration
Email configuration must be done :
- to read messages from your mailbox – there are 2 protocols:
- IMAP (preferred over POP3)
- POP3 (obsolete – only to be used for some rare useful cases)
- to send messages into the internet – SMTP is the protocol to be configured
IMAP Configuration
| Parameter | Value | Comment |
| incoming server name | imap.pt.lu | hostname used to read messages |
| protocol | IMAP | preferred over POP (see above) |
| port | 993 | 993 is mandatory (encrypted) |
| encryption | SSL/TLS | encryption is mandatory |
POP3 Configuration
| Parameter | Value | Comment |
| incoming server name | pop.pt.lu | hostname used to read messages |
| protocol | POP3 | obsolete (see above) |
| port | 995 | 995 is mandatory (encrypted) |
| encryption | SSL/TLS | encryption is mandatory |
SMTP Configuration
| Parameter | Value | Comment |
| outgoing server name | smtp.pt.lu | hostname used to send messages into the internet |
| protocol | SMTP | SMTP AUTH (SMTP submission) |
| port | 465 or 587 | 465 is the default port used by Microsoft Outlook email clients in combination with SSL/TLS. 587 should be used in combination with STARTTLS encryption. |
| encryption | SSL/TLS or STARTTLS | encryption is mandatory take care to select SSL/TLS when using port 465 , and STARTTLS when using port 587. |