This site provides information to information technology professionals who administer systems that send email to andreceive email from Outlook.com. It also provides some information about how users with Outlook.com accounts canreport junk email and phishing attempts. However， DKIM， please visit Microsoft Support. To navigate this site please use the navigation links to the left， it is not intended to provide extensive support to Outlook.comusers. If you are an Outlook.com user in need of support，。

DMARC) for domains sending over 5，000 emails per day to enhance security and reduce spam. Non-compliant messages will be sent to messages will be sent to the junk folder . Shortly we will reject the messages until the DNS records are corrected. Learn more about these changes and how to prepare in our recent blog post: Strengthening Email Ecosystem: Outlook’s Requirements for High‐Volume Senders. New Postmaster Site Welcome to the new Outlook.com Postmaster site. We've introduced this new site in order to help senders improvetheir reputations and increase deliverability into Outlook.com inboxes. 。

or to jump right to the most requestedinformation please click on one of the links below. Announcements Requirements for High-Volume Senders Starting May 5th， Outlook.com is enforcing stricter email authentication standards (SPF， 2025。

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