gomail-noauth示例崩溃

Question

我正试图遵循以下示例：

package main
import (
    "gopkg.in/gomail.v2"
)


func main() {
    m := gomail.NewMessage()
    m.SetHeader("From", "[e-mail]")
    m.SetHeader("To", "[e-mail]")
    m.SetHeader("Subject", "Hello!")
    m.SetBody("text/plain", "Hello!")
    d := gomail.Dialer{Host: "localhost", Port: 587}
    if err := d.DialAndSend(m); err != nil {
        panic(err)
    }
} //main

我得到了这个错误：

panic: 454 4.7.0 TLS not available due to local problem
goroutine 1 [running]:
panic(0x244ca0, 0xc820010b20)
    /usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:464 +0x3e6
main.main()
    /Users/kaiyin/IdeaProjects/gomail/main.go:19 +0x342
exit status 2

我还尝试禁用TLS和SSL:

    d := gomail.Dialer{Host: "localhost", Port: 587, SSL: false, TLSConfig: nil}

但这个错误仍然存在。

---

我查看了mail.log（来自osx 10.10上的postfix）：

Apr  7 14:28:05 kaiyins-mbp postfix/smtpd[64525]: warning: No server certs available. TLS won't be enabled
Apr  7 14:28:05 kaiyins-mbp postfix/smtpd[64525]: connect from localhost[::1]
Apr  7 14:28:05 kaiyins-mbp postfix/smtpd[64525]: lost connection after STARTTLS from localhost[::1]

所以我生成了这样的证书：

cd /etc/postfix
sudo openssl req -new -outform PEM -out smtpd.cert    -newkey rsa:2048 -nodes -keyout smtpd.key -keyform PEM    -days 365 -x509

并更改了后缀设置：

smtpd_enforce_tls                = no
smtpd_tls_loglevel               = 1
smtpd_use_tls                    = yes
smtpd_tls_key_file               = /etc/postfix/smtpd.key
smtpd_tls_cert_file              = /etc/postfix/smtpd.cert

现在我得到一个不同的错误：

panic: x509: certificate signed by unknown authority
goroutine 1 [running]:
panic(0x26e3c0, 0xc8203e4b80)
    /usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:464 +0x3e6
main.main()
    /Users/kaiyin/IdeaProjects/gomail/main.go:19 +0x32f
exit status 2

---

我尝试按照此处的指示生成证书：http://www.akadia.com/services/ssh_test_certificate.html

我又犯了一个错误：

panic: x509: certificate is valid for Kaiyin Zhong, not localhost
goroutine 1 [running]:
panic(0x26a7e0, 0xc8203e6800)
    /usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:464 +0x3e6
main.main()
    /Users/kaiyin/IdeaProjects/gomail/main.go:19 +0x32f
exit status 2

我认为我弄错了服务器名称，所以我重新开始，将服务器FQDN设置为localhost:

Common Name (e.g. server FQDN or YOUR name) []:localhost

然后我回到了以前的错误：

panic: x509: certificate signed by unknown authority
goroutine 1 [running]:
panic(0x26e3c0, 0xc8203e6800)
    /usr/local/Cellar/go/1.6/libexec/src/runtime/panic.go:464 +0x3e6
main.main()
    /Users/kaiyin/IdeaProjects/gomail/main.go:19 +0x32f
exit status 2

Answer 1

设置InsecureSkipVerify选项：

package main
import (
    "crypto/tls"
    "gopkg.in/gomail.v2"
)
func main() {
    d := gomail.NewDialer("smtp.example.com", 587, "user", "123456")
    d.TLSConfig = &tls.Config{InsecureSkipVerify: true}
    // Send emails using d.
}

来源：https://github.com/go-gomail/gomail