Microsoft 365 from GoDaddy Help

What is SMTP Discovery?

SMTP Discovery, as part of the Advanced Email Security add-on, monitors email addresses sending mail with your domain that aren't already added as users or functional accounts, like distribution groups or email aliases.

If you receive an SMTP Discovery Warning Report, you can add the address as a distribution group, email address, or alias. Otherwise, mark it as an invalid account. If you don't see an important email address in the report, manually add it as an alias or functional account (see Email not in SMTP Discovery) to manually add it as an alias or functional account. You must be an admin to complete any of these actions.

Warning: If no action is taken within 4 weeks of receiving an SMTP Discovery Warning Report, it could impact mail flow for the affected email addresses.

Select an action to jump to its section:

Add a user

You'll want to add a user when the email address is part of your Microsoft 365 account but hasn't been added in Advanced Email Security yet.

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration, select User Management, and then SMTP Discovery.
  3. Select the discovered address you'd like to add.
  4. Enter the Firstname and Surname.
  5. Select Create user account from the list, and then Apply.
  6. Select OK to confirm.

Back to top

Add an alias

When there's already an existing user in Advanced Email Security, you can add an alias. This should be the same email alias that's in your Microsoft 365 account.

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration, select User Management, and then SMTP Discovery.
  3. Select the discovered address you'd like to add.
  4. Under OR Add as Alias, enter an existing user's email address for the alias.
  5. Select Create user account from the list, and then Apply.
  6. Select OK to confirm.
    Add an alias

Back to top

Mark as an invalid account

Identify a discovered address as invalid so mail isn't delivered to it.

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration , select User Management, and then SMTP Discovery.
  3. Select the discovered address you'd like to identify as invalid.
  4. Select Mark as invalid account from the list, and then Apply.
  5. Select OK to confirm.

Back to top

Add a distribution group

When a distribution group from your Microsoft 365 account shows up in a SMTP Discovery Report, add it as a functional account.

Note: If the distribution group isn't shown as a discovered address, follow the steps for Email not in SMTP Discovery.

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration, select User Management, and then SMTP Discovery.
  3. Select the checkbox next to the distribution group address you want to add.
  4. Select Create functional account from the list, and then Apply.
  5. Select OK to confirm. It can take up to 90 minutes for these changes to take effect.

Back to top

Email not in SMTP Discovery

If the email doesn't appear in SMTP Discovery, add it as an alias or functional account so Advanced Email Security knows to deliver messages sent to the address. Here's how to add an alias:

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration, select User Management, and then Users.
  3. Select the address where the alias will be added.
  4. At the top of the page, select Aliases.
  5. Select ADD ALIAS.
  6. Enter your alias and select SAVE.

Here's how to add a functional account:

  1. Sign in to Advanced Email Security. Use your Microsoft 365 email address and password (your GoDaddy username and password won't work here).
  2. Under Administration, select User Management, and then Functional Accounts.
  3. Select ADD A FUNCTIONAL ACCOUNT.
  4. Enter a Name (this is optional), Email address, and choose the Account type.
  5. Select Save. You'll see confirmation that the functional account updated.

Note: If the email address is a Microsoft 365 user in your Email & Office Dashboard and it wasn't added to your Advanced Email Security account, contact our GoDaddy Guides for help.

Back to top

More info