Created initial SMTP handlers.

__SMTP_EHLO.h

@@ -0,0 +1,25 @@
+      //---------------------------------------------------------------------------
+      // EHLO command request handling.
+      //---------------------------------------------------------------------------
+
+      else if(command(input) == "EHLO") {
+
+         if(input.length() > 5) {
+            string hostName = input.substr(5);
+         }
+
+         else {
+
+            // TODO: Provide error message demanding identity here. 
+            // 
+         }
+
+         cout << "250-" << getHostName() << CRLF;
+         //  cout << "250-STARTTLS" << CRLF;
+         //  cout << "250-PIPELINING" << CRLF;
+         //  cout << "250-8BITMIME" << CRLF;
+         cout << "250-AUTH LOGIN" << CRLF;
+         cout << "250 HELP" << CRLF;
+         state = "READY";
+      }
+