Troubleshooting This section provides troubleshooting information for senders who are having trouble reaching Outlook.com users by email. If you are an Outlook.com user looking for support with your …

Apr 30, 2026 · That is, the command "RCPT TO:<example@hotmail.com>" requests Outlook.com's servers to respond with whether it will accept mail for example@hotmail.com, information which is …

Outlook.com Outbound IP Space Outlook.com sends e-mail from the following IP addresses: 40.92.0.0/14

Apr 30, 2026 · Outlook.com Smart Network Data Services Deliverability to Outlook.com is based on your reputation. The Outlook.com Smart Network Data Services (SNDS) gives you the data you need to …

Jan 22, 2026 · Policies, Practices, and Guidelines Microsoft is dedicated to help provide the most trusted and protected consumer experience on the web. Therefore, Microsoft has developed various …

Jan 22, 2026 · Fighting Junk Email Microsoft's email safety roadmap involves an unmatched cross-product approach. SmartScreen® anti-spam and anti-phishing filtering technology is being applied …

Services for Senders and ISPs Jump to Sender Solutions Jump to ISP Solutions Sender Solutions Email abuse, junk email, and fraudulent emails (phishing) continue to burden the entire email ecosystem. …

Apr 30, 2026 · This site provides information to information technology professionals who administer systems that send email to and receive email from Outlook.com. It also provides some information …