diff --git a/server/config/config.json b/server/config/config.json
index 9f8cccd..77fab9a 100644
--- a/server/config/config.json
+++ b/server/config/config.json
@@ -1,5 +1,5 @@
 {
-  "logLevel": "info",
+  "logLevel": "debug",
   "domain": "domain.com",
   "webDomain": "mail.domain.com",
   "dkimPrivateKeyPath": "config/dkim/dkim.priv",
diff --git a/server/cron_server/ssl_update.go b/server/cron_server/ssl_update.go
index aefd186..05334cd 100644
--- a/server/cron_server/ssl_update.go
+++ b/server/cron_server/ssl_update.go
@@ -11,8 +11,19 @@ import (
 var expiredTime time.Time
 
 func Start() {
+
+	// 第一次启动，等待到初始化完成
+	if config.Instance == nil {
+		for {
+			time.Sleep(1 * time.Minute)
+			if config.Instance != nil && config.IsInit {
+				break
+			}
+		}
+	}
+
 	if config.Instance.SSLType == "0" {
-		go sslUpdate()
+		go sslUpdateLoop()
 	} else {
 		go sslCheck()
 	}
@@ -42,26 +53,9 @@ func sslCheck() {
 }
 
 // 每天检查一遍SSL证书是否即将过期，即将过期就重新生成
-func sslUpdate() {
+func sslUpdateLoop() {
 	for {
-		if config.Instance != nil && config.Instance.IsInit && config.Instance.SSLType == "0" {
-			days, _, err := ssl.CheckSSLCrtInfo()
-			if days < 30 || err != nil {
-				if err != nil {
-					log.Errorf("SSL Check Error, Update SSL Certificate. Error Info :%+v", err)
-				} else {
-					log.Infof("SSL certificate remaining time is only %d days, renew SSL certificate.", days)
-				}
-				err = ssl.GenSSL(true)
-				if err != nil {
-					log.Errorf("SSL Update Error! %+v", err)
-				}
-				// 更新完证书，重启服务
-				signal.RestartChan <- true
-			} else {
-				log.Debugf("SSL Check.")
-			}
-		}
+		ssl.Update(true)
 		// 每24小时检测一次证书有效期
 		time.Sleep(24 * time.Hour)
 	}
diff --git a/server/main.go b/server/main.go
index 458f65b..12f6323 100644
--- a/server/main.go
+++ b/server/main.go
@@ -81,7 +81,7 @@ func main() {
 	log.Infoln("***************************************************")
 
 	// 定时任务启动
-	cron_server.Start()
+	go cron_server.Start()
 
 	// 核心服务启动
 	res_init.Init()
diff --git a/server/res_init/init.go b/server/res_init/init.go
index 71144f7..d7e90eb 100644
--- a/server/res_init/init.go
+++ b/server/res_init/init.go
@@ -10,6 +10,7 @@ import (
 	"pmail/hooks"
 	"pmail/http_server"
 	"pmail/pop3_server"
+	"pmail/services/setup/ssl"
 	"pmail/session"
 	"pmail/signal"
 	"pmail/smtp_server"
@@ -29,6 +30,8 @@ func Init() {
 
 	for {
 		config.Init()
+		// 启动前检查一遍证书
+		ssl.Update(false)
 		parsemail.Init()
 		err := db.Init()
 		if err != nil {
diff --git a/server/services/setup/ssl/ssl.go b/server/services/setup/ssl/ssl.go
index 9a79bd4..8bd3dea 100644
--- a/server/services/setup/ssl/ssl.go
+++ b/server/services/setup/ssl/ssl.go
@@ -8,10 +8,12 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"github.com/go-acme/lego/v4/certificate"
+	log "github.com/sirupsen/logrus"
 	"github.com/spf13/cast"
 	"os"
 	"pmail/config"
 	"pmail/services/setup"
+	"pmail/signal"
 	"pmail/utils/errors"
 	"time"
 
@@ -170,3 +172,27 @@ func CheckSSLCrtInfo() (int, time.Time, error) {
 
 	return cast.ToInt(hours / 24), cert.NotAfter, nil
 }
+
+func Update(needRestart bool) {
+	if config.Instance != nil && config.Instance.IsInit && config.Instance.SSLType == "0" {
+		days, _, err := CheckSSLCrtInfo()
+		if days < 30 || err != nil {
+			if err != nil {
+				log.Errorf("SSL Check Error, Update SSL Certificate. Error Info :%+v", err)
+			} else {
+				log.Infof("SSL certificate remaining time is only %d days, renew SSL certificate.", days)
+			}
+			err = GenSSL(true)
+			if err != nil {
+				log.Errorf("SSL Update Error! %+v", err)
+			}
+			if needRestart {
+				// 更新完证书，重启服务
+				signal.RestartChan <- true
+			}
+		} else {
+			log.Debugf("SSL Check.")
+		}
+	}
+
+}