Parcours Manage and Secure DNS
Last updated on : 6th October 2025
Rate : €1,600 excl. tax per participant
Email is currently a medium much favoured by scammers: spam, phishing and various other scams. DKIM, DMARC and SPF are three sender authentication techniques currently found in the toolbox of organisations seeking to combat these forms of online abuse.
2 days
Email administration, IT security, IT support and DNS professionals.
A basic understanding of the workings of the DNS and/or email
Stéphane Bortzmeyer, DNS expert & R&D Engineer, Afnic
Marc van der Wal, R&D Engineer, Afnic
The training course is given online via our video conferencing tool.
The link to connect will be sent to you once your registration is finalized.
Practical exercises will be carried out throughout the course to help assimilate the methods and concepts presented.
€1,600 excl. tax per participant
For group enrolment, please contact us for a quotation.
Bookings are possible up to 5 working days prior to the session.
Day 1 – Morning: Functioning of the DNS and of email
Day 1 – Afternoon: Presentation of the SPF protocol
Day 2 – Morning: Presentation of the DKIM protocol
Day 2 – Afternoon: Presentation of the DMARC protocol
DIRECCTE declaration number: 11788446878
Rate : €1,600 excl. tax per participant
PDF format
Need further information on tailoring a training course to your needs?
Contact usOur experts can adapt to your needs and devise a custom training course. For group enrolment, please contact us for a custom quotation.
Afnic places great importance on inclusion of people with a disability. If you require any specific arrangements, please contact us before registering to discuss your proposal (programme, adapted materials, specific needs in terms of accessibility or organisation, etc.).
The DNS is a strategic infrastructure, since all internet services for companies, associations and public organisations depend on it. Implementing DNSSEC allows you to secure this key infrastructure.
The old version of the Internet Protocol, IPv4, has been such a success that we are now faced with a shortage of available addresses. This has the effect of heavily penalising new entrants as well as other players who no longer have enough IPv4 addresses. Maintaining IPv4 is also proving more and more costly for businesses. It is therefore advisable to migrate to the new version of the protocol (IPv6) in order to manage a scalable and extensible pool of IP addresses.
For some years now, both public and private actors have been seeing certain Internet services become inaccessible on account of problems linked to their DNS hosting. These breakdowns have considerable consequences: clients unable to access their bank accounts, online stores inaccessible, public services closed, etc. The robustness of DNS services generally suggests that Internet services are functioning normally; so, without a suitable DNS administration, an organisation can become extremely vulnerable. It is essential for any organisation to have skilled administration that allows it to maintain a comprehensive, high-quality DNS service, whether it is hosted in-house or entrusted to a hosting service provider.
