To protect your mailbox and send e-mails, you need to activate mailbox authentication. How do I do this?

What software do you use to check your e-mails?

Outlook for PC

1. Open Outlook.
2. Go in File, in the top left-hand menu.
3. Choose your account.
4. Click Server settings.
5. Go to Outgoing mail and set it as follows:
   • Server: relay.proximus.be
   • Port : 587
   • Encrypton method : STARTTLS
   • Uncheck "Require logon using Secure Password Auhentification SPA"
   • Check "My outgoing (SMTP) server requires authentication", then "Use the same settings as my incoming mail server".
6. Click on Next, then Complete.

Important: Do this for each device you use to check your mailbox (computer, smartphone, tablet, etc.).

And that's it, your mailbox is protected and you can send e-mails without any problem.

Apple Mail for Mac

1. Open Apple Mail.
2. Click on Mail, then on Preferences.
3. Click on Accounts > Server settings > Outgoing mail account > Modify the list of SMTP servers.
4. Check that the Allow insecure authentication is not ticked.

Important: Do this for each device you use to check your mailbox (computer, smartphone, tablet, etc.).

And that's it, your mailbox is protected and you can send e-mails without any problem.

Other software

1. Open your email software.
2. Go in the Preferences.
3. Tick the box Authentification (the name may vary depending on the software).

If these explanations aren't enough, we'll explain how to check your entire mailbox configuration.