more debug

email.go

@@ -27,21 +27,36 @@ func SendMail(addr, from, subject, body string, to []string) error {
 
 	c, err := smtp.Dial(addr)
 	if err != nil {
+		if *debugFlag {
+			log.Printf("SendMail : smtp.Dial (%s)", err)
+		}
 		return err
 	}
+
 	defer c.Close()
+
 	if err = c.Mail(r.Replace(from)); err != nil {
+		if *debugFlag {
+			log.Printf("SendMail : client.Mail (%s)", err)
+		}
 		return err
 	}
+
 	for i := range to {
 		to[i] = r.Replace(to[i])
 		if err = c.Rcpt(to[i]); err != nil {
+			if *debugFlag {
+				log.Printf("SendMail : client.Rcpt (%s)", err)
+			}
 			return err
 		}
 	}
 
 	w, err := c.Data()
 	if err != nil {
+		if *debugFlag {
+			log.Printf("SendMail : client.Data (%s)", err)
+		}
 		return err
 	}
 
@@ -58,11 +73,23 @@ func SendMail(addr, from, subject, body string, to []string) error {
 
 	_, err = w.Write([]byte(msg))
 	if err != nil {
+		if *debugFlag {
+			log.Printf("SendMail : writer.Write (%s)", err)
+		}
 		return err
 	}
+
 	err = w.Close()
 	if err != nil {
+		if *debugFlag {
+			log.Printf("SendMail : writer.Close (%s)", err)
+		}
 		return err
 	}
-	return c.Quit()
+
+	err = c.Quit()
+	if *debugFlag {
+		log.Printf("SendMail : client.Quit (%s)", err)
+	}
+	return err
 }