Setting up Outbound Email Relay
You can have your company's mail server use the Proofpoint Essentials SMTP server for outbound mail. This will use the same scanning as the inbound mail. In addition, using the Proofpoint Essentials SMTP service will allow you to see the messages in the logs as well.
The pre-requisite for performing an outbound relay is that the domains need to exist in the Proofpoint Essentials service prior to Outbound relaying. This is part of the two-tiered authentication we have for SMTP relay.
Enabling Proofpoint Essentials Outbound Mail service
You need to make sure the service can use the outbound mail flow. Follow these steps to activate relaying.
You are now enabled to use the Proofpoint Essentials server to use SMTP service.
Enable Relaying through Proofpoint Essentials
After relaying is enabled, follow these steps so the Proofpoint Essentials servers allow your IPs to send mail. This is how we authenticate that your mail server is allowed to send mail through our system.
Managed Hosted Services
If the organization uses a managed hosted service, such as Office365 or Google Apps, than Proofpoint Essentials can automatically manage the service IP addresses.
To enable a hosted service:
1. Click the Company Settings tab.
Once enabled the service will appear in the Sending Servers table.
Once you have completed both sections above, please see Setup step 4 (configuring your mail server for SMTP usage with Proofpoint Essentials).
NOTE: Only static IP addressed and fully registered accounts will be accepted when sending outbound email - please verify these when opening a support ticket.