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2.24.2.3.11. Correct Authentication Setting in Outlook 2013-2019

When a mail client connects to a mail server to receive or send mail, authentication is used for security purposes. There are different authentication methods. Some of the options are CRAM-MD5 or APOP, which are currently outdated and insecure. Here's how to check your current settings and set up a more modern and secure authentication method.

Outlook 2016/2019
Outlook 2013

In Outlook 2016/2019 for macOS, manual configuration is not required. The application determines the appropriate authentication method automatically.

To properly set up authentication in Outlook 2016/2019, do the following:

Open the section "File»:
On the tab “Intelligence»Click«Server parameters»:
Check your inbox settings:
- The parameters “Port"And"Encryption method»:
  - If the IMAP protocol is used (at the top it says “IMAP account settings»):
    - For the connection to the server to be encrypted, recommended use port 993 and the encryption method "SSL/TLS».
    - If an unencrypted connection suits you, you can use the port 143 and the encryption method "No».
  - If the POP3 protocol is used (at the top it says “POP account settings»):
    - For the connection to the server to be encrypted, recommended use port 995 and the encryption method "SSL/TLS».
    - If an unencrypted connection suits you, you can use the port 110 and the encryption method "No».
- The parameter “Secure Password Checker (SPA)"- a check mark opposite it necessarily must be removed. If the checkbox is checked, uncheck it.
Expand and check the outgoing mail settings:
- The parameters “Port"And"Encryption method»:
  - For the connection to the server to be encrypted, recommended use port 465 and the encryption method "SSL/TLS».
  - If an unencrypted connection suits you, you can use the port 25 or 2525 and the encryption method "No».
- The parameter “Secure Password Checker (SPA)"- a check mark opposite it necessarily must be removed. If the checkbox is checked, uncheck it.
Save your changes and test your mail.

To properly configure authentication in Outlook 2013, please do the following:

Open the section "File»:
On the tab “Intelligence»Click«Account setup…»:
Select the desired mail account and click "Edit…»:
The parameter “Secure Password Checker (SPA)"- a check mark opposite it necessarily must be removed. If the checkbox is checked, uncheck it. Then click “Other settings ..»:
Check the settings on the “Outgoing mail server»:
- The checkbox next to "SMTP server requires authentication" must be checked.
- The switch should be opposite "Same as server for incoming mail».
Switch to the "Additionally"And check the encryption settings:
- The parameters “…-server"And"Use the following type of encrypted connection"(For POP3 will be called"Requires an encrypted connection (SSL)»):
  - Incoming mail:
    - If you are using IMAP (the field is named "IMAP server»):
      - For the connection to the server to be encrypted, recommended use port 993 and the type of encrypted connection "SSL».
      - If an unencrypted connection suits you, you can use the port 143 and the type of encrypted connection "No».
    - If the POP3 protocol is used (the field is named "POP3 server»):
      - For the connection to the server to be encrypted, recommended use port 995 and the checked box opposite the encrypted connection (SSL).
      - If an unencrypted connection suits you, you can use the port 110 and the unchecked box opposite the encrypted connection (SSL).
  - Outgoing mail (field "SMTP Server»):
    - For the connection to the server to be encrypted, recommended use port 465 and the encryption method "SSL».
    - If an unencrypted connection suits you, you can use the port 25 or 2525 and the encryption method "No».
Save your changes and test your mail.