In this video, Chaim Krause discusses domain-based message authentication, reporting, conformance, and enhancing SPF and DKIM by providing spam reporting and information to other email administrators.
- [Instructor] DMARC, Domain-based Message Authentication,…Reporting and Conformance.…What we have is another attempt to detect email spoofing.…It builds upon earlier efforts…with the Sender Policy Framework and DKIM,…and it adds additional information…that is encoded in the DNS…for the receiving email server to use to compare…to find out if it's an authentic message.…If it is not an authentic message,…there's also information on how to handle that…so that people can police their domain's reputation…on the internet by taking action against spoofed emails…and so, there's a reporting mechanism that goes with that.…
You can find information in RFC 7489…and there's some good information…at this address on the web.…What it looks like in practice,…is a text entry in the DNS resource record pull…of name-value pairs.…We can look at the one we have here,…version DMARC1, and it goes through…what to do with spoofed emails…and it asks to send notification to the following addresses…if one is detected.…
So, this is a combination of SPF,…
- Reviewing the components of email delivery
- Sending mail with Postfix internally and externally
- Configuring TLS, SASL, and an email client
- Installing database tools
- Creating virtual domains, users, and aliases
- Exploring greylisting with Postgrey
- Installing and configuring spam tools
- Reviewing DNS-based protection against spammers
Skill Level Intermediate
Linux: Multitasking at the Command Linewith Scott Simpson39m 1s Intermediate
Linux: Desktops and Remote Accesswith Grant McWilliams1h 44m Intermediate
1. Basic Setup
2. Going Beyond Basic Services
3. Agent-Based Protection Against Spammers
4. DNS-Based Protection Against Spammers
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