Thunderbird Configuratin for SMTPS Service

Linux Tutorials - Herong's Tutorial Examples

∟Email Client Tools - Mail User Agents (MUA)

∟Thunderbird Configuratin for SMTPS Service

This section provides a tutorial example on how to configure Thunderbird use SMTPS (SMTP with SSL/TLS) service to securely sending out new emails.

If you are concerned about sending emails as clear text to the remote SMTP service, you can change Thunderbird configuration to use SMTPS (SMTP with SSL/TLS) service provided by Postfix.

For example, my Postfix is configured to support the following:

SMTP service on port 465, with SSL/TLS and no authentication.

So here is what I did to change Thunderbird configuration with above server setting.

1. On my email server, make sure that Postfix listening on the given port.

herong$ nmap -T4 192.168.1.100

PORT     STATE SERVICE
465/tcp  open  smtps

2. On my email server, make sure that the firewall is open for those ports.

herong$ sudo firewall-cmd --zone=public --list-all

public (active)
  services: cockpit dhcpv6-client ftp http imap pop3 pop3s smtp smtps ssh

3. Now launch Thunderbird on the other computer.

4. Click "Tools > Account Settings" menu. You see the "Account Settings" tab open.

5. Click "Outgoing Server (SMTP)" on the left. You see the "Outgoing Server (SMTP) Settings" open.

6. Click on the "192.168.1.100". You see the current SMTP server setting.

7. Make the following changes:

Settings
  Description:    SMTP with SSL/TLS
  Server name:    192.168.1.100
  Port:           465

Security and Authentication
  Connection security:   SSL/TLS
  Authentication method: Normal password
  Username: