Safeguards
SPF, DKIM and DMARC
What are SPF, DKIM and DMARC?
SPF, DKIM and DMARC are three records in the management of your internet domain. Together they stop outsiders from sending email in your domain's name.
SPF defines which servers are allowed to send for your domain. DKIM adds a signature to every outgoing message so the recipient can verify it is genuine. DMARC ties the two together and tells the receiving mail server what to do with messages that fail. DMARC also delivers reports on attempts to abuse your domain.
Without these three records a faked invoice can be sent in your company's name while your own systems remain completely untouched. The damage lands with your customers and reflects on your name.
All terms in the knowledge base
Legal notice: We are engineers, not lawyers: we cannot and will not make any statements on legal questions. This entry is purely technical, reflects the state of knowledge to the best of our understanding, and is not legal advice; it does not replace review by a qualified lawyer. No guarantee is given as to correctness or completeness; liability arising from the use of this information is excluded to the extent permitted by law. What counts is always the version currently in force at the responsible body, for example dsb.gv.at, nis.gv.at or enisa.europa.eu. AI transparency: parts of this entry may have been created with AI assistance, so errors are possible despite review: please report errors here · how we create content.
From the term to practice
Where does your business actually stand?
The IT Check reviews your IT across 8 audit areas with more than 100 individual checks and delivers documented findings with a prioritised action plan. From 1,299 € excl. VAT.
office [at] vetosec [dot] at · vetosec.at/contact/
