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Set up Cloud Mail Security

We will explain you how to set up Cloud Mail Security, since you will need to take a number of steps on your end.  A summary of the advantages of our platform can be found in the Contractual Service Description.

In practice, the following changes will be made to your e-mail flow:

Changes to Cloud Mail Security

E-mails will no longer be analysed for spam and malware by the existing platform, but rather by a new and improved platform. This applies to both incoming mail (from the external mail server to your mail server) and outgoing mail (from your mail server to an external mail server). In case you don't have an existing mail security platform, you can follow the same steps.

To ensure a smooth migration, please follow the steps in the table below in the stated order. You can also follow the steps in the above diagram.

Step Component Person responsible Action
1 DNS Your DNS administrator

Add the DNS TXT record PROX PROX-AP-XG90TY4901Z to your DNS; do this for all your e-mail domains. This is required in order to show that you are the owner of these domains.

If Proximus is your DNS administrator, you can contact DNSmasters@proximus.com.

2 Firewall Your firewall / mail server administrator

Once the platform is in use, e-mails which are sent to your organization will come from another source. So, before you change the mail flow, make sure the IP addresses indicated on symantec.com have access to your e-mail environment. You can also send outgoing mail to this platform, and therefore to these IP addresses (or cluster5out.eu.messagelabs.com), if you make the necessary changes.

Download the manual for Office 365 and Google Apps .

3 New platform - Cloud Mail Security Proximus Proximus activates your account and sends your login data for the Cloud Mail Security platform. The data will be sent from no-reply@proximus.com.
4 New platform - Cloud Mail Security Your IT administrator / Proximus

Log in to your account with the data you received in the e-mail (see Step 2). The configuration has been transferred as much as possible from the old solution to the new one, but we recommend that you check the configuration in the platform and adapt it if necessary.

5 DNS Your DNS administrator Add the following MX records to your DNS:
  • 10 cluster5.eu.messagelabs.com
  • 20 cluster5a.eu.messagelabs.com

The priority of the existing MX records must be lowered. We advise you not to change them at this stage. NB: It can take 24 hours for your MX records to be changed.

If Proximus is your DNS administrator, you can contact DNSmasters@proximus.com.

6 DNS (optioneel) Uw DNS-beheerder

If you use or want to use SPF (Sender Policy Framework), you can add an SPF record to your DNS. More details can be found on symantec.com.

If Proximus is your DNS administrator, you can contact DNSmasters@proximus.com.

7 New platform - Cloud Mail Security Your IT administrator Check whether the platform processes incoming and outgoing e-mail properly.
8 Mail server Your mail server administrator Check whether the e-mail flow runs smoothly.
9 DNS Your DNS administrator Delete the old MX records. If Proximus is your DNS administrator, you can contact DNSmasters@proximus.com.

Questions and contact

The following sources also contain a lot of interesting information to configure Cloud Mail Security to your needs:

If you have any further questions, please contact our Service Desk via MyProximus or 0800/14888.

Intervention by a Proximus Security Engineer

If you would like to leave the complete configuration of your new Cloud Mail Security account to one of our Security Engineers, this is also possible. If you do not have an existing Managed Services contract, you can create a Service Request via MyProximus. The rates are (excl. VAT):

Start-up fee (one-off fee per intervention):

  • From Monday to Friday from 8 am to 6 pm: € 150
  • From Monday to Friday from 6 pm to 8 am: € 300
  • During weekends and holidays: € 600

Intervention fee (per started hour):

  • From Monday to Friday from 8 am to 6 pm: € 100
  • From Monday to Friday from 6 pm to 8 am: € 200
  • During weekends and holidays: € 400

Contact us

Our employees are ready to help you!