3.1.10.1.5. OTP

From the OTP tab, you can enable or disable sending QR One Time Passwords (OTP) Secrets by email.

General

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  • Enable “Send OTP secret as QR”: Select “yes” so that the user will receive a QR code that they will use in Google Authenticator.

  • Allow to send QR more than once: By default, the QR Code can be sent only once (if you want to send another email you have to generate a new OTP secret). In case you want to reuse the same code, enable this field.

  • One time QR: If we enable one time QR mode, the QR will adopt the following parameters:

    • TTL one time QR (in minutes): Defines the time in minutes that it will take for a QR image to expire from when it is sent until it is scanned by the user. By default 480 minutes.

    • Maximum number of uses of QR image: Set the maximum number of scans of the same QR image.

    • Captive portal URL: Address for the unique QR.

E-mail configuration

Email settings without one-time QR mode enabled.

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  • Email QR from: Enter the e-mail address of the sender.

  • Username of “E-mail from”: Provide a descriptive name (e.g., the sender’s name or the organization’s name) instead of an email address, especially avoiding the same email address used in the “Email from:” field. This information is crucial to prevent potential rejection by mail relay servers due to anti-spam rules.

  • E-mail title: Enter subject of the email.

  • Email QR template: This section includes the HTML code that will be seen in the content of the email sent with the one time QR off mode.

  • One time QR email configuration:

Mail setup with single QR mode enabled.

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  • Email from: Enter the e-mail address of the sender.

  • Username of “E-mail from”: Provide a descriptive name (e.g., the sender’s name or the organization’s name) instead of an email address, especially avoiding the same email address used in the “Email from:” field. This information is crucial to prevent potential rejection by mail relay servers due to anti-spam rules.

  • E-mail title: Enter subject of the email.

  • Email template: This section includes the HTML code that will be seen in the content of the email sent with the mode once QR enabled.

Click on Save to apply the changes.