Set up your sending subdomain without delegation of authority

This article presents the general procedure for configuring your sending subdomain without using authority delegation.

If you wish to use several subdomains, this procedure must be applied for each one of them.

1. Subdomain configuration : prerequisites

Some elements must be considered before proceeding:

• The subdomain name cannot exceed 28 characters.
• The parent domain must host a website or redirect to a website.
• The parent domain must have been created a few weeks ago.
• HSTS must not be enabled for the parent domain.
• It recommended not to hide the whois of the parent domain.

Choose a short and clear name for your subdomain. It should reflect the nature of the communications it will be used for.

For example: news.domain.com for sending newsletters, order.domain.com for sending transactional messages related to purchases, or notify.domain.com for sending transactional messages related to account management.

PMAIL operates based on DNS entries deemed correct. You must ensure that no changes will be made to the approved DNS without prior validation and agreement from the technical teams. Additionally, the expiration of the domain name is the client’s responsibility.

To ensure optimal reputation, this or these domains must also be able to receive emails. You will need to configure valid MX records on this or these domains.

2. Elements Provided by Your Probance Consultant

You must first communicate the name of the subdomain to be configured to your Probance consultant.

A dedicated PMAIL platform will be set up, and your consultant will provide you with the following elements:

• 2 CNAME Records
• 2 DKIM subdomains and values
• A Google key
• A Yahoo key

These details must be kept for the creation of the DNS records.

3. DNS records creation

The following 9 DNS entries must be configured for your domain:

1) A record

Subdomain: [your subdomain]
Target:
– European infra: 34.95.109.220
– Americas infra: 34.160.101.84

2) CNAME records

1. Subdomain: prbnce.[your subdomain]
   Target :
   – European infra: mta01.fr.probancemta.com
   – Americas infra: mta01.ca.probancemta.com
2. Subdomain: www.[your subdomain]
   Target: ig.probancemail.com
3. Subdomain: ig.[your subdomain]
   Target: ig.probancemail.com
4. Subdomain: tg.[your subdomain]
   Target: tg.probancemail.com
5. Subdomain : provided by your Probance consultant, in the format tracking.ibXXXX.[your subdomain]
   Target: emailtracking.email-messaging.com
6. Subdomain : provided by your Probance consultant, in the format ibXXXX.[your subdomain]
   Target: provided by your Probance consultant, in the format ibXXXX_[your subdomain].envelope2.email-messaging.com

3) DMARC record

Subdomain: _DMARC.[votre sous-domaine]
Value: v=DMARC1; p=reject; rua=mailto:dmarc@probance.com; ruf=mailto:dmarc@probance.com; fo=1

4) SPF record

Subdomain: [your subdomain]
Value:
– European infra: v=spf1 include:spf.mta01.fr.probancemta.com include:email-messaging.com -all
– Americas infra: v=spf1 include:spf.mta01.ca.probancemta.com include:email-messaging.com -all

5) TXT record

1. Subdomain: [your subdomain]
   Value: Google Key provided by your Probance consultant
2. Subdomain: [your subdomain]
   Value: Yahoo Key provided by your Probance consultant

6) DKIM record

1. Subdomain: DKIM subdomain value provided by your Probance consultant
   Value: DKIM value provided by your Probance consultant
2. Subdomain: DKIM subdomain value provided by your Probance consultant
   Value: DKIM value provided by your Probance consultant