All SMTP Requests from the SST (formerly DSP) are made on TCP port 25 (See SST System Ports).
Users sometimes need to send email from the SST/DSP application using a different TCP port, but this cannot be configured from within the DSP.
To configure SMTP ports other than 25, follow the steps below.
Set mail server to localhost in SST/DSP
1. In the SST/DSP application, navigate to Admin > Configuration > Parameters
2. Set the Email Server field to
Add SMTP Role in Server Manager
1. On the DSP application server, navigate to the Add Roles and Features Wizard in the Server Manager.
2. Select Features.
3. Select the SMTP Server.
Edit Settings in SMTP Virtual Server properties
1. Open the IIS 6.0 Manager.
2. Select Properties from the SMTP Virtual Server context menu.
3. Edit settings on these tabs:
Set the IP address to the IP address of the DSP app server.
Select the Enable logging check box.
Open the Advanced menu and make sure the TCP Port is set to 25.
Open the Authentication menu and select the Integrated Windows Authentication check box.
Open the Connection menu and grant access to both the DSP app server IP address and 127.0.0.1 (local host) by adding them to the Computers list.
Open the Relay menu and add the DSP app server IP address, 127.0.0.1 (local host), and the IP address of the email server where the email will be sent (example: 18.104.22.168).
Set Limits as desired.
Set the retry and timeout values as desired.
- In Delivery > Outbound Security, set up the authentication needed for the server where emails will be sent. Consult with your email provider if needed.
- In Delivery > Outbound Connections, set the TCP Port to the relay port required for the email provider (should be something other than 25).
- In Delivery > Advanced, make sure the Fully-qualified domain name is the name of the DSP app server. In Smart Host, enter the name of the outgoing email server.
Add to the Operators list any service accounts that need access to IIS.