Microsoft 365 to Get Support for Custom ARC Configurations

Share post:

Microsoft recently announced in an update that it is working to add custom Authenticated Received Chain (ARC) configuration support to Microsoft Defender for Office 365.

Activating ARC for Office 365 hosted mailboxes prevents email authentication from falling due to modifications made during routing thereby preserving results at every level.

While Microsoft stated that the new feature will be widely available on web platforms from March 2022, the ability to customize ARC configurations to include additional trusted intermediaries, modify messages with attributions while also linking their signatures with their domain names thereby keeping the ARC chain intact.

According to Microsoft, “Email senders use authentication mechanisms like SPF, DKIM, DMARC to authenticate emails, but some legitimate intermediate services may potentially make changes to the email, which might cause the email to fail authentication at subsequent hop. With this change, admins will be able to add trusted intermediaries in the Microsoft 365 Defender portal to allow Microsoft to honor these ARC signatures, thereby allowing legitimate messages.”

For more information, read the original story in Bleeping Computer.

Featured Tech Jobs

SUBSCRIBE NOW

Related articles

FTC says Microsoft’s layoffs at Activision Blizzard may threaten merger approval

The FTC has expressed dissatisfaction with Microsoft's layoffs at Activision Blizzard, challenging the integrity of the Microsoft-Activision deal....

Delaware court voids Musks $56 billion dollar compensation

Tesla's stock experienced a notable downturn following a Delaware court's decision to void CEO Elon Musk's massive $56...

IT World Canada strikes partnership with Canadian Cybersecurity Network

Goal is to make it easier for infosec pros to access each organization

Microsoft overtakes Apple as world’s most valuable company

In a notable shift in the tech industry, Microsoft has recently overtaken Apple to become the world's most...

Become a member

New, Relevant Tech Stories. Our article selection is done by industry professionals. Our writers summarize them to give you the key takeaways