SMTP gateway
About the SMTP gateway fields.
The SMTP Gateway service provides options that must be configured to define the level of extraction that must be performed on the incoming requests on the DSG. Based on the requirements, data security operations are performed on the extracted sensitive data.
The fields for the SMTP Gateway service are as shown in the following figure.
The following table describes the additional fields for the SMTP Gateway service.
| Field | Sub-field | Description |
|---|---|---|
| Hostnames | ||
| Host Address | Hostname or the IP address for an inbound request received by the gateway. The service IP of the DSG must be specified. For example, secured-smtp.abc.com. | |
| Forwarding Address | Hostname or the IP address for an outbound request forwarded by the gateway. The hostname or IP address of the SMTP server must be specified. For example, smtp.abc.com. | |
| Outbound Transport Settings | Name-Value pairs used with the outbound transport. |
The ssl_options supported for the Outbound Transport Settings in the SMTP Gateway are described in the following table.
| Options | Description | Default |
|---|---|---|
| certfile | Path of the certificate stored in the DSG to be sent to the SMTP server. | n/a |
| keyfile | Path of the key stored in the DSG to be sent to the SMTP server. | n/a |
| cert_reqs | Specifies whether a certificate is required for validating the TLS/SSL connection between the DSG and the SMTP server. The following values can be configured:
| CERT_NONE |
| ssl_version | Specifies the SSL protocol version used for establishing the SSL connection between the DSG and the SMTP server. | PROTOCOL_SSLv23 |
| ciphers | Specifies the list of supported ciphers. | ‘ECDH+AESGCM’,‘DH+AESGCM’,‘ECDH+AES256’,‘DH+AES256’,‘ECDH+AES128’,‘DH+AES’,‘RSA+AESGCM’,‘RSA+AES’ |
| ca_certs | Path where the CA certificates (in PEM format only) are stored. | n/a |