Email unable to send messages

4.5

Messages stay in the outbox or return a "Delivery Failed" error.

Symptoms
  • "Message not sent"
  • Stuck in Outbox
  • Bounce-back emails
Possible Causes
  • Incorrect SMTP settings
  • Outgoing port blocked
  • Account suspended

Step-by-Step Fix

1

Check SMTP Settings

Ensure the outgoing server address and port (usually 465 or 587) are correct.

2

Verify Authentication

Ensure "My outgoing server requires authentication" is checked in settings.

3

Check Internet Connection

A weak connection can prevent the mail client from reaching the server.

When to See a Technician

If you can receive but not send, the issue is almost always with the SMTP port or authentication settings.

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