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3 changes: 3 additions & 0 deletions defender-office-365/submissions-admin.md
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Expand Up @@ -140,6 +140,9 @@ For other ways that **admins** can report messages to Microsoft in the Defender

After a few moments, the block entry is available on the **Domains & addresses** tab on the **Tenant Allow/Block Lists** page at <https://security.microsoft.com/tenantAllowBlockList?viewid=Sender>.

> [!NOTE]
> Admin submissions for on-premises mailboxes are only supported for messages that are less than 7 days old. Additionally, uploading email files for admin submissions is not currently supported for on-premises mailboxes.

### Report questionable email attachments to Microsoft

1. In the Microsoft Defender portal at <https://security.microsoft.com>, go to **Actions & submissions** \> **Submissions**. Or, to go directly to the **Submissions** page, use <https://security.microsoft.com/reportsubmission>.
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