SMTP Mail Service Configuration
Posted by Joseph Carpenski on 21 June 2010 08:44 PM

These instructions assume that you are using the web server’s IIS SMTP service for delivering email. If you are using a different SMTP server, the same basic principles will apply, however the steps to achieve this result may vary.

Relaying

If you have not specified an SMTP username and password in the global configuration file, then the LMS application will be connecting anonymously to your SMTP server. By default, IIS’s SMTP service does not allow email to be sent through anonymous connections, so we will need to add an exception for relaying.

  1. Open IIS and right-click the Default SMTP Virtual Server and select Properties.
  2. When the new windows opens, click the Access tab.
  3. Click the Relay… button.
  4. Ensure that Only the list below is selected. Click the Add… button.
  5. Check Single Computer and enter 127.0.0.1 in the IP Address field.
  6. Click OK to close all property windows.

Fully Qualified Domain Name

In order to ensure that the server name included in email headers corresponds to the name of the server, you’ll need to set the Fully-qualified domain name property in the SMTP Configuration.

  1. Open IIS and right-click the Default SMTP Virtual Server and select Properties.
  2. When the new window opens, click the Delivery tab.
  3. Click the Advanced… button.
  4. Enter your GC_DOMAIN name in the fully-qualified domain name field.
  5. Click OK to close all property windows.

PTR (Reverse-DNS) Records

To help ensure that emails generated by the system are accepted by recipient servers, be sure that your web host has created a PTR Record for your IP address. PTR records are also known as Reverse-DNS records and are checked by some mail servers as a way to filter spam. Your web host should create a PTR record for your IP address that resolves to the GC_DOMAIN name that you entered in the global configuration file.

SPF Records

To help ensure that emails generated by the system are accepted by recipient servers, you should also create SPF Records for your domain. SPF Records contain a list of servers are allowed to send email for a particular domain. Recipient servers may check the SPF Records of your domain when receiving email to ensure that the server that sent the email is listed and therefore authentic.

To create SPF Records, contact the DNS provider for your GC_DOMAIN name.

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