Redirecting inbound email traffic to the Email Services infrastructure
To redirect your inbound email traffic to the Email Services infrastructure, you must change your MX records. You must change your MX records for both an SMTP server and a public hosted cloud service such as Google Apps Email, or Microsoft® Office 365™.
An MX record is a type of resource record in the Domain Name System (DNS) that defines how email is routed. MX records point to the servers that should receive email and define their priority relative to each other. Your MX records need to route your inbound email through the cloud security services infrastructure, where Email Services scan the emails. The clean emails continue on to your email recipients.
To route your email through the cloud security services infrastructure, your MX records must change to the values that we give you to ensure that all of your email is scanned. They are used as pointers to where your emails are delivered.
To route your email through Email Services, change the primary and the secondary MX records for your domains to the MX records that we provide you with. These are in your confirmation email from us. Your New Customer confirmation email contains the exact MX information that you should use.
Check that the confirmation email is not delivered to your spam folder. This email contains very important information.
First, identify who hosts your domains; that is, the person or organization that is responsible for maintaining your organization's MX records or DNS settings. Your Internet service provider (ISP) may be responsible for your MX records. Typically, each provider supplies an online form to make changes. Or you may have to notify them that you require a change to your MX records.
A typical set of MX records before you modify them to use Email Services may look like the examples in the following table.
Table: MX records example
Primary (lowest) MX preference (default)
MX 10 mailhost.domain.com
Second MX preference (back-up)
MX 20 relay.isp.com
The new MX record entries that you should use are in the format that is shown in the following table.
Table: MX records example
New MX record
Primary (lowest) MX preference (default mail route)
MX 10 clusterx.xx.messagelabs.com
Second MX preference (back-up mail route)
MX 20 clusterxa.xx.messagelabs.com
Ensure that these changes are completed within five working days of receiving your confirmation email and that no back-up MX records remain in place.
As soon as the MX record changes have been made and have propagated, the Email Services start scanning the emails that your domain receives from external senders. When Email Services are fully deployed, the AntiVirus and AntiSpam services are automatically active. They are configured with default settings. Your inbound email (and outbound email, if provisioned) passes through the Email Services infrastructure. To customize the settings for AntiVirus and AntiSpam, make the necessary configuration changes in the portal before you change your MX records.
Imported Document ID: HOWTO101618
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