AastraLink Pro 160 Administrator Guide
Configuring Network Settings
•SMTP Relay Address
Simple Mail Transfer Protocol (SMTP) is the standard used for email transmissions across IP networks. The AastraLink Pro 160 is capable of acting as its own Mail Transfer Agent (MTA) for SMTP email. By default, the AastraLink attempts to perform DNS lookups and resolve the destination email server for direct delivery to the end user.
To disable DNS lookup and direct delivery of email, and use an external SMTP relay instead, specify the IP address or fully qualified domain name (FQDN) of the relay in the SMTP Relay Address field. For example, the SMTP relay server may be a Microsoft Exchange server on your LAN, or a server that your ISP provides.
Note: The SMTP Relay Address configures the internal LAN or external WAN address of the SMTP relay server. The SMTP relay server must be correctly configured to permit incoming email traffic from the AastraLink Pro 160 to be forwarded through the relay to the end users.
•SMTP Relay Port
The SMTP Relay Port is the port that handles SMTP traffic to/from the relay server. Valid ports you can select from are:
•Mail Transfer Agent (MTA), port 25 for RFC 2822 authentication (default)
•Mail User Agent (MTU), port 587 for RFC 2476 message submission
•Server requires authentication
If your network server requires authentication for SMTP, you can enable this feature using the “Server requires authentication” parameter. Enabling this parameter requires that you also specify an SMTP Username, Password and Account for the server.
If server authentication is disabled, the AastraLink uses the value specified for the Domain parameter at the location
•SMTP Username
(If server authentication enabled) The SMTP Username specifies the username for SMTP account authentication.
