Thunderbird Configuration for SMTPS Service

Email Tutorials - Herong's Tutorial Examples

∟Mozilla Thunderbird - Mail User Agents (MUA)

∟Thunderbird Configuration 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 your email server supports SMTPS (SMTP over SSL/TLS) service instead of SMTP with STARTTLS service, you can change Thunderbird configuration accordingly.

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 imaps pop3s smtps ssh

3. Now launch Thunderbird on my local 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: No authentication
  Username: