Routing outbound email

Administrators can route outbound email through an external SMTP server.

About this task

The following are some reasons to relay outbound mail via an external SMTP server:
  • Integration with compliance archiving solutions
  • Screening messages through a data loss protection system
  • Complex enterprise mail routing requirements
Use the SMTP routing to control outbound traffic by defining a server name for IBM® Web Mail Cloud. This server name enables Web Mail Cloud to route outbound email that originates with users from the organization. Routing can be done at the domain or user level. To implement this option, you must provide the following information:
  • The host name or IP address of the outbound SMTP server
  • Verification that the server is properly configured. For example, make sure that email messages sent from the Web Mail Cloud outbound mail transfer agent (MTA) are accepted by this host for mail relay.
Note: In order to avoid a delay in email delivery, the volume of outgoing customer email is monitored. If an unusual volume of outbound email is detected, outbound email is throttled. Make sure you set sender controls for large distribution lists and avoid sending bulk emails within a short period of time.

Procedure

After you have this information, you can configure the outbound mail gateway for all users or for individual users:

  1. Click Administration > Manage Organization .
  2. Click Web Mail Cloud.
  3. Click Outbound Mail Gateway to configure or modify a gateway for all users. Enter the address of the mail gateway in Outbound Gateway. To delete the gateway for all users, delete the address from Outbound Gateway.
  4. To configure a gateway or update the address of the existing gateway for individual users, use the following procedure:
    1. Click Mail Account Manager.
    2. Select a User ID from the list.
    3. Click the Outbound Gateway icon in the Action column.
    4. Enter the address of the outbound gateway server.
    5. Click Save.
  5. To delete the gateway for an individual user, use the following procedure:
    1. Click Mail Account Manager.
    2. Select a User ID from the list.
    3. Click the Outbound Gateway icon in the Action column.
    4. Delete the address of the outbound gateway server.
    5. Click Save.