Email Tutorials - Herong's Tutorial Examples

∟Email Client Tools - Mail User Agents (MUA)

∟Windows 10 Mail Configuration Failed

This section provides a tutorial example on how Windows 10 Mail failed to connect email services provided by Postfix and Dovecot servers.

What Is Windows 10 Mail? Windows 10 Mail is the built-in email client tool on your Windows 10 computer.

Configuring Windows Mail to work with Postfix and Dovecot is very difficult, even after I have turned on all services with default ports:

• SMTP service on port 25, with STARTTLS (Opportunistic TLS) and no authentication.
• SMTPS service on port 465, with SSL/TLS and no authentication.
• SMTP Submission service on port 587, with STARTTLS (Opportunistic TLS) and no authentication.
• POP3 service on port 110, with STARTTLS (Opportunistic TLS) and normal username/password authentication.
• POP3S service on port 995, with SSL/TLS and normal username/password authentication.
• IMAP service on port 145, with STARTTLS (Opportunistic TLS) and normal username/password authentication.
• IMAPS service on port 993, with SSL/TLS and normal username/password authentication.
• Email server address is 192.168.1.100.
• Email address is herong@example.com.
• Username and password associated with the email address: herong and TopSecret.

Here is what I have tried on my Windows 10 computer with no success.

1. Search "Mail" and select "Mail (App)" to start Windows 10 Mail.

2. Click "Settings > Accounts > Add Account". You see a list of account types like Outlook, Google, Yahoo!, ...

3. Click "Advanced Settings > Internet Email (POP or IMAP)" at the end of the list. You the "Internet Email Account" dialog box.

4. Enter the following settings:

       Email: herong@example.com
    Username: herong
    Password: TopSecret
Account name: Herong Local Email
   Your name: Herong Yang

Incoming mail server: 192.168.1.100:995:1
        Account type: POP3

Outgoing mail (SMTP) server: 192.168.1.100:465:1

  [ ] Outgoing server require authentication
  [ ] Use the same user name and password for sending email
  [x] Require SSL for incoming email
  [x] Require SSL for outgoing email

5. Click "Sign-in". It tries to connect for several seconds and creates the account.

6. Click on the "Sync" email icon. It tries for several seconds and comes back with no emails and no error.

7. Click "New email" and send out a test email message. The email is sent with no error. But nothing received on the server side.

Clearly, this is a bug in Windows 10 Mail. The email account is created with no errors, but it is not able to receive emails from the server. New email is sent with no errors, it is not delivered to the server.

By the way, I have tried a number of different port and service options, and none of them worked. See next tutorial on troubleshooting the root cause of the issue.

Table of Contents

 About This Book

 Introduction to Email

 Postfix - Mail Transport Agent (MTA)

 SSL/TLS Secure Connections with Postfix Server

 Dovecot - IMAP and POP3 Server

 SSL/TLS Secure Connections with Dovecot Server

►Email Client Tools - Mail User Agents (MUA)

 "mailx" Command - Send and Read Emails

 "Alpine" - Terminal-Based Email Client

 macOS Mail Auto Configuration

 macOS Mail Manual Configuration

 Accept Certificate Exception in macOS Mail

►Windows 10 Mail Configuration Failed

 SSL/TLS Connection Issue in Windows 10 Mail

 Mozilla Thunderbird - Mail User Agents (MUA)

 References

 Full Version in PDF/EPUB

Windows 10 Mail Configuration Failed - Updated in 2024, by Herong Yang