Configure Authentication for Outbound Messages
You can configure the SMTP virtual server to provide the authentication credentials required by a receiving server. There are three types of authentication available: anonymous, basic (clear text), and Integrated Windows authentication. Anoymous requires no authentication. With the clear text option, the account name and password of the server you're connecting to are transmitted in clear text. Integrated Windows authentication requires a Windows account name and password.
Note In most cases it may be more practical to configure outbound authentication on a connector. Connectors only send e-mail to specific remote domains and are thus more suited for making exceptions for certain addresses, whereas configurations made on an SMTP virtual server affect all messages.
The following table describes the two basic configuration scenarios:
|SMTP Transmissions||Authentication Option|
|Messages are commonly sent to multiple addresses.||Disable authentication for the SMTP virtual server. If attempts to deliver messages to an address fail because of authentication requirements, configure an SMTP connector to that address and set the required authentication level there.|
|Messages are commonly sent to one address, which requires authentication.||Determine what level of authentication is required to connect. Then enable authentication for the SMTP virtual server using the same level. If you want to then send messages to other addresses, set up connectors and set different authentication options accordingly.|
To configure authentication for outgoing messages:
Related TopicsOutbound Security (on an SMTP Connector)