dev: add retry for send email

emailsender/emailsender.go

@@ -69,6 +69,8 @@ func New(cfg Config) *EmailPlainAuthSender {
 		to   string
 		name string
 		body string
+
+		retry int
 	}
 
 	var whiteListRegs = []*regexp.Regexp{}
@@ -98,7 +100,7 @@ func New(cfg Config) *EmailPlainAuthSender {
 
 	var emailQueue = make(chan emailItem, 1024)
 	var emailSendFunc = func(to string, name, body string) (err error) {
-		eml := emailItem{to, name, body}
+		eml := emailItem{to, name, body, 0}
 		emailQueue <- eml
 		return nil
 	}
@@ -139,6 +141,13 @@ func New(cfg Config) *EmailPlainAuthSender {
 				log.Infof("to[%v],from[%s]", m.To, m.From)
 				log.Infof("smtpUser[%s],smtpPass[%s],smtpAddr[%s:%s],smtpProxy[%s]",
 					smtpUser, secLogPass(smtpPass), smtpAddr, smtpPort, secLogProxy(cfg.SmtpProxy))
+				if eml.retry < 5 {
+					go func() {
+						eml.retry++
+						time.Sleep(time.Duration(5*eml.retry) * time.Second)
+						emailQueue <- eml
+					}()
+				}
 				continue
 			}
 			log.Infof("success send email to [%s]", eml.to)

smtp/smtp.go

@@ -95,7 +95,6 @@ func DialWithProxy(addr string, proxyAddr string) (*Client, error) {
 	if err != nil {
 		return nil, fmt.Errorf("proxy.SOCKS5 error: %w", err)
 	}
-	fmt.Println("dialer=================", dialer)
 
 	conn, err := dialer.Dial("tcp", addr)
 	if err != nil {