Exercise caution if you receive a suspicious or unexpected email appearing to come from Zoom that’s not from one of the IPs listed above. If you receive a suspicious email from Zoom, you can report it by submitting a request to Zoom’s Trust & Safety team. To help prevent fraudulent or suspicious emails, we encourage organizations to consider enabling a DMARC (Domain-based Message Authentication, Reporting, and Conformance) policy that rejects emails that fail DKIM and SPF.