Scenario
A user configured email on a laptop. Incoming mail works, but outgoing mail fails.
Email Client Settings
| Setting | Current Value |
|---|---|
| Incoming protocol | IMAP |
| Incoming server | imap.examplemail.com |
| Incoming port | 993 SSL/TLS |
| Outgoing server | smtp.examplemail.com |
| Outgoing port | 110 |
| SMTP authentication | Enabled |
Answer the PBQ
Instructor Answer
Wrong setting: Outgoing SMTP port.
Best fix: Use SMTP port 587 with STARTTLS, or 465 with SSL if the provider requires it. Port 110 is POP3 receiving.