使用 luasocket smtp 和 ssl 发送电子邮件

我一直在尝试使用帖子中描述的代码发送电子邮件：

lua使用gmail账户发送邮件 https://stackoverflow.com/questions/11070623/lua-send-mail-with-gmail-account

代码由米哈尔·科特曼 https://stackoverflow.com/users/221509/michal-kottman下面重复：

-- Michal Kottman, 2011, public domain
local socket = require 'socket'
local smtp = require 'socket.smtp'
local ssl = require 'ssl'
local https = require 'ssl.https'
local ltn12 = require 'ltn12'

function sslCreate()
    local sock = socket.tcp()
    return setmetatable({
        connect = function(_, host, port)
            local r, e = sock:connect(host, port)
            if not r then return r, e end
            sock = ssl.wrap(sock, {mode='client', protocol='tlsv1'})
            return sock:dohandshake()
        end
    }, {
        __index = function(t,n)
            return function(_, ...)
                return sock[n](sock, ...)
            end
        end
    })
end

function sendMessage(subject, body)
    local msg = {
        headers = {
            to = 'Your Target <target email>',
            subject = subject
        },
        body = body
    }

    local ok, err = smtp.send {
        from = '<your email>',
        rcpt = '<target email>',
        source = smtp.message(msg),
        user = 'username',
        password = 'password',
        server = 'smtp.gmail.com',
        port = 465,
        create = sslCreate
    }
    if not ok then
        print("Mail send failed", err) -- better error handling required
    end
end

如果我从 gmail 发送一些东西，该代码就可以正常工作。但是当我使用 godaddy smtp 服务器 smtpout.secureserver.net （相同端口）时，它无法发送消息。我刚刚收到错误代码 550。 请任何人帮我弄清楚如何使这项工作有效。

Thanks.

多亏了这篇文章，它才有效：

尝试通过Python向Google发送电子邮件，电子邮件被拒绝 https://stackoverflow.com/questions/25002795/trying-to-send-email-to-google-through-godaddy-in-python-email-being-denied

我刚刚更改了代码以在 headers 表中添加 from 字段，如下所示：

-- Michal Kottman, 2011, public domain
local socket = require 'socket'
local smtp = require 'socket.smtp'
local ssl = require 'ssl'
local https = require 'ssl.https'
local ltn12 = require 'ltn12'

function sslCreate()
    local sock = socket.tcp()
    return setmetatable({
        connect = function(_, host, port)
            local r, e = sock:connect(host, port)
            if not r then return r, e end
            sock = ssl.wrap(sock, {mode='client', protocol='tlsv1'})
            return sock:dohandshake()
        end
    }, {
        __index = function(t,n)
            return function(_, ...)
                return sock[n](sock, ...)
            end
        end
    })
end

function sendMessage(subject, body)
    local msg = {
        headers = {
            from = "<your email>",
            to = 'Your Target <target email>',
            subject = subject
        },
        body = body
    }

    local ok, err = smtp.send {
        from = '<your email>',
        rcpt = '<target email>',
        source = smtp.message(msg),
        user = 'username',
        password = 'password',
        server = 'smtp.gmail.com',
        port = 465,
        create = sslCreate
    }
    if not ok then
        print("Mail send failed", err) -- better error handling required
    end
end