Use only the MX records specified in your New Customer confirmation email so that we can scan all of the email destined to your network. The presence of non-cloud security services entries in your MX records, e.g. mailhost.your-domain.com or isp-relay.your-domain.com is a security risk. Spammers, virus writers, and fraudsters often target back-up MX record entries in an attempt to bypass the cloud Email Services. In this way, spam or other malicious content can be delivered to your organization directly. Your MX records should never include an entry for your mail server or any type of mail relay.
It can take up to 24 hours for MX record changes to result in full propagation. However, you should allow 72 hours for changes to fully propagate across the Internet. Full propagation means that the cloud Email Services can scan all email that your domain receives from external sources.
Once your organization is provisioned with cloud Email Services, it is possible that we could process some of your email before you have changed your MX records. This is the case if another cloud Email Services customer is provisioned on the same cluster as your organization. An email that is sent to one of your domains by another customer passes through the scanners on its way out from the sending customer. We identify that your domains are provisioned on our system and route those emails through your inbound policies and onto your provisioned gateways. So, an email that is sent from another of our clients to you on your cluster means that your service configurations are applied. You may experience the following:
Your email disclaimers are applied.
See Services > Email Services > Email disclaimers.
Your AntiSpam detection settings filter spam
The inbound Content Control rules that you have defined are applied
Your inbound Image Control settings are applied
Address Registration is operational.
Your up-to-date address list must be applied. Otherwise, an email that is sent from another client on your cluster is blocked because it is not found in your address list.
Inbound email size restrictions are applied.
See Services > Email Services > Anti-Virus > Virus Settings.
Your dashboard and reports may show that email has been received for you
An email that is sent to you from another of our clients that is on the same cluster as you is delivered to your provisioned Mailhosts.
If you have asked us to send email to a Mailhost that is not yet ready to accept mail, contact us immediately.