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关于新增独立 IP 增值服务的公告
package mainimport ("crypto/tls""fmt""log""net""net/smtp""encoding/base64")// Test465 for port 465func Test465() error {host := "sg-smtp.qcloudmail.com"port := 465//控制台创建的发信地址email := "abc@cd.com"//控制台设置的SMTP密码password := "****"toEmail := "test@test123.com"ccEmail := "cc@test123.com"bccEmail := "bcc@test123.com"header := make(map[string]string)header["From"] = "test " + "<" + email + ">"header["To"] = toEmailheader["Cc"] = ccEmailheader["Bcc"] = bccEmailheader["Subject"] = "test subject"//html格式邮件header["Content-Type"] = "text/html; charset=UTF-8"header["Content-Transfer-Encoding"] = "base64"body := "<!DOCTYPE html>\\n<html>\\n<head>\\n<meta charset=\\"utf-8\\">\\n<title>hello world</title>\\n</head>\\n<body>\\n " +"<h1>我的第一个标题</h1>\\n <p>我的第一个段落。</p>\\n</body>\\n</html>"//纯文本格式邮件//header["Content-Type"] = "text/plain; charset=UTF-8"//body := "test body"message := ""for k, v := range header {message += fmt.Sprintf("%s: %s\\r\\n", k, v)}message += "\\r\\n" + base64.StdEncoding.EncodeToString([]byte(body))auth := smtp.PlainAuth("",email,password,host,)err := SendMailWithTLS(fmt.Sprintf("%s:%d", host, port),auth,email,[]string{toEmail},[]byte(message),)if err != nil {fmt.Println("Send email error:", err)} else {fmt.Println("Send mail success!")}return err}// Dial return a smtp clientfunc Dial(addr string) (*smtp.Client, error) {conn, err := tls.Dial("tcp", addr, nil)if err != nil {log.Println("tls.Dial Error:", err)return nil, err}host, _, _ := net.SplitHostPort(addr)return smtp.NewClient(conn, host)}// SendMailWithTLS send email with tlsfunc SendMailWithTLS(addr string, auth smtp.Auth, from string,to []string, msg []byte) (err error) {//create smtp clientc, err := Dial(addr)if err != nil {log.Println("Create smtp client error:", err)return err}defer c.Close()if auth != nil {if ok, _ := c.Extension("AUTH"); ok {if err = c.Auth(auth); err != nil {log.Println("Error during AUTH", err)return err}}}if err = c.Mail(from); err != nil {return err}for _, addr := range to {if err = c.Rcpt(addr); err != nil {return err}}w, err := c.Data()if err != nil {return err}_, err = w.Write(msg)if err != nil {return err}err = w.Close()if err != nil {return err}return c.Quit()}func main() {Test465()}
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