dongsi0625 2018-04-22 03:00
浏览 108

如何通过`exim -t`发送密件抄送电子邮件? [“相似的发送邮件”模式]

I'm using golang to send email with exim via following method

const sendmail = "/usr/sbin/exim"

func submitMail(m *gomail.Message) (err error) {
    cmd := exec.Command(sendmail, "-t")
    cmd.Stdout = os.Stdout
    cmd.Stderr = os.Stderr

    pw, err := cmd.StdinPipe()
    if err != nil {

    err = cmd.Start()
    if err != nil {

    var errs [3]error
    _, errs[0] = m.WriteTo(pw)
    errs[1] = pw.Close()
    errs[2] = cmd.Wait()
    for _, err = range errs {
        if err != nil {

as Answered on here

The problem is that Exim removes Bcc with -t

If Exim is called with the -t option, to take recipient addresses from a message's headers, it removes any Bcc: header that may exist (after extracting its addresses), unless the message has no To: or Cc: header, in which case a Bcc: header with no addresses is left in the message, in accordance with RFC 822. If -t is not present on the command line, any existing Bcc: header is not removed.

If Exim is called to receive a message with the recipient addresses given on the command line, and there is no Bcc:, To:, or Cc: header in the message, it normally adds a To: header, listing the recipients. Some mailing list software is known to submit messages in this way, and in this case the creation of a To: header is not what is wanted. If the always_bcc option is set, Exim adds an empty Bcc: header instead in this circumstance.

found in Spec here

  • 写回答

1条回答 默认 最新

  • dougan1205 2018-04-22 08:16

    "Sendmail look alike" mode with-t removes Bcc: headers after processing them.
    In -t mode Bcc: headers content will be appended to the (SMTP) recipients list BUT recipients will not see/receive Bcc: headers.

    Style guide suggestion: IF you use another SMTP/MTA soft (e.g. Exim) in "sendmail look alike" (command line comparability mode) THEN use sendmail program/binary provided by them.
    const sendmail = "/usr/sbin/sendmail"

    本回答被题主选为最佳回答 , 对您是否有帮助呢?



  • ¥15 关于#wireshark#的问题:并且能够给数据做标注,如这个流量是在看视频或者是在转账
  • ¥90 请问,这个视频播放软件的名称,用过的朋友请给答案,上方..avi是啥意思?是看短剧还是播放本地视频?
  • ¥15 运筹优化,gurobi,python
  • ¥15 基于python的电影系统推荐
  • ¥20 springmvc重定向和返回json
  • ¥15 数学建模——参会安排怎么做
  • ¥15 电脑键盘实现触摸功能
  • ¥25 matlab无法将表达式转换为双数组怎么解决?
  • ¥15 单片机汇编语言相关程序
  • ¥20 家用射频美容仪技术规格