feat: Add optional SMTP_NAME configuration for connecting to SMTP servers that require the client to have a specific hostname

server/env.ts

@@ -264,6 +264,12 @@ export class Environment {
    */
   public SMTP_HOST = process.env.SMTP_HOST;
 
+  /**
+   * Optional hostname of the client, used for identifying to the server
+   * defaults to hostname of the machine.
+   */
+  public SMTP_NAME = process.env.SMTP_NAME;
+
   /**
    * The port of your SMTP server.
    */