The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 2022
Filed:
Oct. 24, 2019
Microsoft Technology Licensing, Llc, Redmond, WA (US);
David William Fantham, Seattle, WA (US);
Puneet Soti, Seattle, WA (US);
Deepika Gakhar, Syosset, NY (US);
Gregory Gourevitch, Redmond, WA (US);
Abhishek Agrawal, Redmond, WA (US);
MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US);
Abstract
The technology described herein helps improve email security within a multi-tenant email service. In particular, the technology described herein helps make it more difficult for a first tenant of the email service to impersonate a second tenant of the email service by validating the sending domain before the email leaves the multi-tenant email service. In particular, the technology runs a sending-side source validation on an email. If the source validation fails, the email is still sent, but using a source IP address that will cause the email to fail a receiving-side email authentication tests, such as the sender policy framework (SPF) email authentication test. In contrast, if the source validation passes, the email is sent using a source IP address that will cause the email to pass the receiving-side email authentication tests.