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If you have deliverability issues when sending to Hotmail, please read our general guidance here. If you still have problems and need to contact Hotmail Sender Support, please fill out the form here .
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 across Microsoft's email platforms to provide customers with the latest anti-spam and anti-phishing tools and innovations throughout the network.
Try connecting to mail.hotmail.com via port 25. If you are unable to connect, then attempt to telnet over port 25 directly to our email servers (MTAs). You can find the current list of our MTAs by querying "nslookup –q=mx hotmail.com" from a command prompt (this should work in a variety of Operating Systems).
Outlook.com Outbound IP Space Outlook.com sends e-mail from the following IP addresses: 40.92.0.0/14 © 2018 | | | Developers | English (United States)
This site provides information to information technology professionals who administer systems that send email to and receive email from Outlook.com.
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.
