Set up DMARC
Set up DMARC at Arsys
Where the Arsys DNS editor is, how to write each record in its form and how to check that it has gone in properly.
Where to paste it
“Accede al Área de Cliente” (Access the Customer Area) → “Selecciona el producto correspondiente en el menú lateral izquierdo” (Select the relevant product in the left-hand menu) → “Accede al Panel de Control y selecciona Entradas DNS dentro del módulo Web” (Open the Control Panel and select DNS entries within the Web module) → “Añadir entrada DNS” (Add DNS entry) link in the top menu → pop-up window with Entrada DNS, Tipo, Valor (DNS entry, Type, Value) → “Añadir” (Add). Under “Tipo” (Type) the options are TXT, SPF and DKIM (the last two are TXT: “Las entradas DKIM son entradas de tipo TXT” (DKIM entries are TXT-type entries))
Arsys creates some of these records by itself. If one of the same type already exists at that name, edit it: do not add another.
Careful: Arsys’s guide suggests setting p=quarantine from day one. Do not: start at p=none and raise it with the reports in hand.
How Arsys writes each name
The same record is written differently depending on the panel. At Arsys:
Domain root (SPF)
- Type
- TXT
- Name
empresa.example- Value
v=spf1 include:_spf.google.com ~all
DMARC
- Type
- TXT
- Name
_dmarc.empresa.example- Value
v=DMARC1; p=none; rua=mailto:informes@empresa.example
DKIM (example)
- Type
- CNAME
- Name
selector1._domainkey.empresa.example- Value
selector1-empresa-example._domainkey.empresa.example
Example values: yours depend on which services send with your domain. An SPF copied from somewhere else may leave out your invoicing program.
Check that it has gone in properly
DNS changes take anything from a few minutes to a few hours to show. Once you have pasted the records, run your domain through the X-ray.
dig +short TXT _dmarc.empresa.exampleDmarcado