Managing personal Outlook.com account settings, security, and privacy
Hi, Paul Thomas
You’ve already taken important steps by changing your password and reporting the unauthorized sign-in. However, mailbox settings also need checking after an account compromise.
Here are some suggestions you can try:
Open Hotmail in a computer browser, then check Settings > Mail > Rules and Mail > Forwarding specifically. Remove unfamiliar rules and forwarding addresses, even if the other settings look normal. These can redirect messages before you see them.
Next, review your account’s security information and sign-in methods, remove anything unfamiliar, and enable two-step verification.
Send another Gmail test and check Gmail for a delivery-failure notice. If one appears, share only the error text here, with email addresses removed. If nothing arrives and the settings are clear, contact Outlook.com support through Help, explaining the compromise and the checks already completed.