Back in October 2019, Microsoft included ARC support in their Microsoft 365 Roadmap, stating that “[ARC] is now enabled for Office 365 hosted mailboxes.” But at that time it could only be used between Office 365 tenants, or from Microsoft’s in-house services. However in June of 2022 they made it possible for each tenant to […]
A question people asked repeatedly in 2016 was whether or not their organization could deploy DMARC if they only used SPF at present. They knew the recommendation is to use both DKIM and SPF, and were concerned that their organizations couldn’t benefit from DMARC without DKIM. The short answer is that you can use DMARC […]
The interoperability testing event mentioned when ARC was announced in October (see this press release) has been scheduled for Friday, February 19th, 2016 in San Francisco. Parties implementing the ARC protocol in their product or service by that date should consider participating in the event. Those parties should join the arc-discuss mailing list if they […]