Outlook.com
...Outlook.com is a user-friendly platform for managing emails, calendars, and tasks efficiently in one place....
https://nam10.safelinks.protection.outlook.com/GetUrlReputation
Smart Network Data Services - Outlook.com
...Deliverability to Outlook.com is based on your reputation. The Outlook.com Smart Network Data Services (SNDS) gives you the data you need to understand and improve your reputation at Outlook.com....
https://sendersupport.olc.protection.outlook.com/snds/index
Troubleshooting - Outlook.com
...If you are experiencing problems delivering email to Outlook.com please first ensure that you are following all of the requirements found on our Policies and Guidelines page....
https://sendersupport.olc.protection.outlook.com/pm/Troubleshooting.aspx
Outlook
...Outlook...
https://www.outlook.com/mail/?ui=zh-TW&rs=IS
Fighting Junk Email - Outlook.com
...The goal for Outlook.com is to offer a comprehensive and usable email service that helps detect and protect users from junk email, fraudulent email threats (phishing) and viruses....
https://sendersupport.olc.protection.outlook.com/pm/junkemail.aspx
SNDS - FAQ - sendersupport.olc.protection.outlook.com
...It is against Outlook.com policy to send mail from a machine which is an open proxy server, and it will be blocked from accessing some or all of Outlook.com servers as long as it remains in that state....
https://sendersupport.olc.protection.outlook.com/snds/faq
Services for Senders and ISPs - Outlook.com
...However, Microsoft understands that legitimate email senders should not be negatively affected. Therefore, we have established a suite of services to help senders improve their deliverability to Outlook.com consumers by proactively managing their sending reputation....
https://sendersupport.olc.protection.outlook.com/pm/services.aspx
Policies, Practices, and Guidelines - Outlook.com
...Senders attempting to send email to Outlook.com users should ensure they fully understand and are following the guidance on this page to help in this effort and to help avoid potential deliverability issues....
https://sendersupport.olc.protection.outlook.com/pm/policies.aspx
Outlook.com Outbound IP Space
...Announcements: Click here to see new updates for SNDS. Updated March 3rd, 2026 Outlook.com Outbound IP Space Outlook.com sends e-mail from the following IP addresses: 40.92.0.0/14...
https://sendersupport.olc.protection.outlook.com/pm/ipspace
Outlook.com Postmaster
...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 about how users with Outlook.com accounts can report junk email and phishing attempts....
https://sendersupport.olc.protection.outlook.com/pm/postmaster.aspx