alt Hacker NewsSounds like something every mail sender should have done already.
Good for Microsoft customers and I don't care one bit for the lazy people who have to late-patch now.
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"Lazy people"? I only heard about this because a customer complained. Am I supposed to go around the Internet, checking what each mail server will allow or deny?
DMARC is a DNS record that says "send emails about spoofed messages here", or optionally "I don't need you to tell me that scammers exist on the internet".
It doesn't prevent spoofing, it doesn't say which IPs are authorized to send on behalf of a domain, it doesn't sign messages. Spoofed messages are still sendable.
Can you explain the benefit of only accepting email if Microsoft knows that you may or may not accept emails about scammers unsuccessfully spoofing your email domain? (Note, there's nothing you can do if they do tell you.)
Don't confuse DMARC with DKIM or SPF; DMARC doesn't actually do anything for email security.
Yeah, and people who don't switch to Dvorak are lazy, too!
https://ciphercue.com/blog/dmarc-enforcement-gap-rua-fragmen...
https://news.ycombinator.com/item?id=49081783
I have MCP servers for the creation of domains, DNS records with DNSSEC, and email accounts with SPF, DKIM and DMARC. I'm sure if someone wants to be a professional spammer today, DMARC is not a differentiator.
lol, what a bunch of bs.
gmail runs with p=none
so tell me what benefits that has over having no dmarc record at all ?
I kind of have to agree. DMARC is not new. It's useful and helps make email safer. It's not even hard to set up. There's just no reason for any legitimate mail provider not to use it. Same for people who are technical enough to run their own mail servers.