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What is SPF and why should it be configured?

Published by Mailrelay on January 11, 2017

¿Qué es el SPF?

Surely you would not think of using your WiFi without a password, would you? Any person could use your connection to access your computer, steal your data, surf the internet, Right?

Most people are aware that they need to use strong passwords to protect sensitive information such as Wi-Fi, credit card, etc.

However, when it comes to email, many users don’t know that they need to protect themselves, preventing misuse of their corporate information. Probably they are not aware of its importance.

Would you allow anyone to send emails in the name of your company, pretending to be you?

I don’t think so.

To avoid these problems, there are security measures and technical settings, such as SPF that you can add for your sender domain.

What is the SPF?

In short, and for you to understand, the SPF will indicate the IPs that can send using a domain. This means that it should be configured so that only you, or the email marketing software you use, can send e-mail on your behalf.

According to Google:
It is a DNS record, (Domain Name Service) that identifies the email servers that can send messages on behalf of your domain.

Google

What can happen if it is not configured correctly? Or if it is not configured?

Several things:

  • Your emails may be considered spam.
  • Or even not be accepted by the servers

Why?

  •  If it is not configured, the destination server may not know if the message was actually sent by you, so the filter might think it is Spam, and so add the email in the spam folder.
  •  If it is not configured correctly, it may not even allow Mailrelay to send your emails.

How do I check my current SPF?

You can do several things:

  • * Contact the Mailrelay Support Department so that they can check it for you.
  • * Or contact with your hosting.

You can also check the SPF on this page:

Just enter your domain name in the box below and Click on Survey domain:

Comprueba tu SPF en dmarcian

On the next screen, you’ll see something like this:

Resultados tras comprobar el SPF

It is important to verify the record correctly.

What happens if the SPF includes -all?

This word, “all” means that only the IPs listed in this SPF line can send email using the sender domain.

If the setting doesn’t use -all, but is different, such as +all, The string will be more “open.” But if the record uses the -all command, only the listed IPs can send emails from this domain.

Why use -all?

It is very likely that your domain is configured that way, because the domain/hosting providers configure the DNS as restrictive as possible  to prevent users from sending spam.

Thus, it is quite possible that it is configured this way, and you can’t send emails before changing it.

What do you need to do to send emails using an email marketing software?

You will have to include the follow string:

include:yourMailrelayAccount.ip-zone.com

So that your domain can allow Mailrelay to send your emails.

That is, Mailrelay will not be able to send emails with the domain until the the SPF record is correct

So that Mailrelay can send emails On your domain name, the SPF needs to be modified to include:

include:accountname.ip-zone.com

If you don’t have an SPF record for your domain, you can add a record like this:

v=spf1 include:changeitforyouraccount.ip-zone.com a mx -all

Or contact your hosting to set it up for you. For example, you can send them this message:

Mensagem ao seu provedor

Hello,

I need to add an SPF record for my domain, or modify it  to add this value:

Include:changeitforyouraccount.ip-zone.com

So that the records will be like this:

V=spf1 include:changeitforyouraccount.ip-zone.com a mx -all

V=spf2.0/pra include:changeitforyouraccount.ip-zone.com a mx -all

If this domain already have an SPF record, please update it to include the new string, without deleting the other ones.

Thanks.

However, if you have any questions, please contact:

But it is always, always advisable to have the SPF properly configured and checked before sending newsletters.

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Comments

  1. Juan

    Hola en mi Servidor para configurar el SPF(TXT) me pone nombre del host, el valor y una opción que se llama TTL y tengo que poner un limite de tiempo.
    Seria: Host: believe-app.ip-zone.com
    Valor: v=spf1 include:https://believe-app.ip-zone.com a mx -all

    02/11/2018 - 10:38:56 Publicar una respuesta
  2. Edgard

    Hola,
    Mi registro spf se ve así:
    v=spf1 a mx ptr include:secureserver.net ~all
    Le he agregado los datos de Mailrelay y ha quedado así:
    v=spf1 a mx ptr include:unconect.ip-zone.com include:secureserver.net -all
    Puedes porfavor indicarme si he realizado el cambio correctamente?
    Saludos.

    07/10/2018 - 10:40:17 Publicar una respuesta
    • Mailrelay

      ¡Hola Edgard! Yo diría que está bien, pero si quieres consulta con soporte mejor para que te indiquen cómo probarlo. Aunque sí, parece estar bien.

      08/10/2018 - 07:56:56 Publicar una respuesta
  3. Ramón

    Hola gracias por la información mi registro se ve así

    Es correcto?

    vspf1 include:cucada.ip-zone.com include:_spf.loading.es -all 
    incluye: cucada.ip-zone.com

    Un saludo

    03/10/2018 - 11:36:40 Publicar una respuesta
    • Mailrelay

      Hola Ramón, creo que esta mal pues aparece dos veces cucada.ip-zone.com Es mejor que contactes con soporte para que te lo revisen.

      03/10/2018 - 11:53:38 Publicar una respuesta
  4. Carlos Eduardo Carrizo

    Buenas tardes. Mi registro figura así v=spf1 include:PorTuCuenta.ip-zone.com include:spf.dondominio.com -all
    Mi duda es que mi proveedor de dominio es dondominio pero el email que me brinda es webmail. Debería cambiarlo a lo siguiente o es correcto el actual?
    v=spf1 include:MiDominioAqui.ip-zone.com include:spf.webmail.com -all

    28/08/2018 - 23:11:10 Publicar una respuesta
    • Mailrelay

      Hola Carlos, en el SPF deberías incluir el dominio, ya que el email que utilices debería estar asociado a tu dominio.

      29/08/2018 - 08:20:41 Publicar una respuesta
  5. Raul Alanis

    Hola, actualmente mi regirtro SPF está así:

    “v=spf1 include:autotransportecari.ip-zone.com a mx -all”
    “v=spf1
    include:spf.exchangeadministrado.com ~all”

    Tienen que estar ambos en una sola linea o pueden estar así separados?

    10/07/2018 - 19:24:33 Publicar una respuesta
    • Mailrelay

      Hola Raul, es mejor que escribas a soporte para que te ayuden, así en dos líneas está incorrecto y no funcionará bien.

      11/07/2018 - 07:24:55 Publicar una respuesta
  6. Bonny

    Hola, gracias por la respuesta.
    Mi registro spf se ve así:
    v=spf1 include:zoho.com ~all
    si le agregara los datos de Mailrelay ¿debería verse así?
    v=spf1 include:zoho.com include:digital-universal.ip-zone.com ~all
    ¿o también tengo que agregarle “a mx”?
    Saludos.

    29/06/2017 - 18:06:39 Publicar una respuesta
    • Mailrelay

      ¡Hola! Sí, así te serviría, aunque puedes cambiar el ~all por -all

      29/06/2017 - 19:37:35 Publicar una respuesta
      • Bonny

        Ok, gracias por la aclaración.
        Saludos.

        29/06/2017 - 20:27:25
      • Mailrelay

        ¡De nada! 🙂

        30/06/2017 - 07:59:03
  7. Bonny

    Hola, gracias por el post, es bastante informativo, pero tengo una duda:
    Tengo un registro spf en mi dominio apuntado a zoho mail, si quiero utilizar los autorrespondedores de Mailrelay ¿debo crear otro registro spf o sólo se puede tener uno?

    Gracias de antemano
    Saludos.

    29/06/2017 - 05:28:57 Publicar una respuesta
  8. Cristian Perelló

    Muchas gracias, muy bien explicado.

    01/06/2017 - 09:45:49 Publicar una respuesta

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