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RFC 5321 RFC 5322 Letter Envelope 5321.MailFrom 5322.From

RFC 5321 and RFC 5322

It’s important to have a basic understanding of RFC 5321 and RFC 5322 to fully understand DMARC, DKIM and SPF. These two RFC’s describe different types of sender information and …

Using DMARC and SPF Without DKIM

Using DMARC to validate your SPF record makes perfect sense even if you have no plan of implementing DKIM. There you have it! Although implementing DKIM is highly recommended you …

DMARC processing flowchart

DMARC Explained

Anyone involved with managing Office 365 or other mail systems should definitely have a look at DMARC. DMARC stands for “Domain-based Message Authentication, Reporting and Conformance” and is built upon …