FAQ & videos

What is a DNS, and how can we configure it to authorize a connection with CentrixOne?

What is a DNS? #

A DNS (domain name system) is the part after the email address that follows @ symbol.

What is a DNS for? #

To create an email address, you first need a DNS (domain name system). This name is associated with a server that will manage the sending and receiving of your emails.

Why do we have to add a special configuration in a DNS to allow sending via a third-party platform? #

It is simply for security reasons. This configuration is required in order to prevent a malicious person from sending emails in your name, thus using your domain name.

Basically, this means that you will authorize, for example, the CentrixOne platform to connect to your domain name and thus send emails in your name by using your personalized domain.

Why does your email address end with @crm-send.com when you send emails via CentrixOne? #

By default, our CRM offers a pre-configured domain name to allow its customers to send emails via the CentrixOne platform without having to set up a specific authorization.

All you need is paid access and a package that includes email marketing to unlock the feature.

How to configure your CentrixOne account to replace @crm-send.com with your custom domain name? #

You must add and/or modify the information below in your DNS management tool. Your hosting provider or IT technician will be able to configure this for you.

Important #

Please copy and paste the following code fields in their entirety, then replace the “yourdomain.com” with your actual domain name. Please note that DNS entries are case-sensitive, hyphenated, dotted, etc.

Attention #

Some registrars or web hosts automatically add the domain name to the end of the hostname. If this is your case, please do not add your domain name at the end to avoid duplication of the domain name. Example: “s1._domainkey.votredomaine.com” will become only “s1._domainkey“.

Step # 1/5 #

Add include:centrixmail.com to the TXT record beginning with v=spf1, located at the root of your domain.

If you do not have SPF records for your domain yet, add the following code:

v=spf1 mx include:centrixmail.com ~all

If you already have an SPF record for your domain, because you have already given this type of permission to other applications, please do not create a new SPF entry but rather modify your current SPF.


v=spf1 mx include:spf.protection.outlook.com -all

would become:

v=spf1 mx include:spf.protection.outlook.com include:centrixmail.com -all

If you need more information on the SPF, you can visit this page: https://mxtoolbox.com/SPFRecordGenerator.aspxhttps://mxtoolbox.com/SPFRecordGenerator.aspx

To verify your SPF registration, you can visit this: https://mxtoolbox.com/spf.aspx

Step # 2/5 #

Add a CNAME record named s1._domainkey pointing to s1.domainkey.centrixmail.com



Step # 3/5 #

Add a CNAME record named s2._domainkey pointing to s2.domainkey.centrixmail.com



Step # 4/5 #

Add a CNAME record named e1.votredomaine.com pointing to e1.centrixmail.com



Step # 5/5 #

Once you have completed steps 1 through 4, please email support@centrix.one to notify us that the changes have been made and that your custom domain name is ready to be associated with your CentrixOne account.

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