log sending email error

service/service.go

 
 import (
 	"fmt"
+	"log"
 	"net/http"
 	"strings"
 	"time"
 		err := monitorURL(url)
 		if cache.CheckMonitor(url, err) {
 			if err != nil {
-				notice.SendEmailBySMTP("url error", config.C.Notice.Emails, err.Error(), false)
+				err = notice.SendEmailBySMTP(url+" timeout", config.C.Notice.Emails, err.Error(), false)
 			} else {
-				notice.SendEmailBySMTP("url return ok", config.C.Notice.Emails, "return ok", false)
+				err = notice.SendEmailBySMTP(url+" ok", config.C.Notice.Emails, "ok", false)
+			}
+			if err != nil {
+				log.Printf("send email error:%s,host:%s", err.Error(), config.C.Notice.SMTP.Host)
 			}
 		}
 	}
 	}
 	useTime := int64(time.Now().Sub(startTime) / time.Millisecond)
 	if useTime > config.C.Monitor.Timeout {
-		return fmt.Errorf("timeout url:%s,millisecond:%d", url, useTime)
+		return fmt.Errorf("url:%s timeout:%dms", url, useTime)
+	}
+	if config.C.App.Debug {
+		log.Printf("url:%s use time:%dms\n", url, useTime)
 	}
 	return nil
 }