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Category Archives: DMARC

Bolstering Email Authentication with ARC and Email Security with MTA-STS

In the most recent release of Cloudmark Security Platform (CSP) for Email 5.7, Cloudmark’s carrier-class email security gateway adds support for two emerging authentication and security protocol standards: Authenticated Received Chain (ARC, RFC 8617) and SMTP MTA Strict Transport Security (MTA-STS, RFC 8461). The ARC protocol addresses a difficulty in authenticating forwarded messages not addressed by other […]

AOL’s DMARC change fends off Com Spammers attack, but data breach still not explained

In the past two weeks it’s quite possible that you received spam apparently from a friend’s AOL account, saying something like Have a nice day or People say it really works and then a link to what looks like a news magazine web site talking about diet pills. Here’s one of several that I received. […]

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