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. However, it is not intended to provide extensive support to Outlook.com users. If you are an Outlook.com user in need of , 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. These products include Outlook.com, Exchange, Office 365, and more. The , Blocked: IPs which are blocked from sending mail into Hotmail. Attempts to send mail to Hotmail's mail servers from these IPs will result in consistent refusal, however use of the Hotmail web user interface may not be affected--it is controlled separately., 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)., 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. To help build back consumer trust in the use of email, Microsoft has put in place various policies and technologies to help protect our consumers. However, Microsoft understands that legitimate , .