最近开发一个项目,需要给客户发送报告邮件,在开发中遇到本地调试发送邮件一切正常,但当部署到服务器上的时候,一直返回“发送失败”,在此记录,以免以后采坑
webapi 端代码:
/// <summary> /// 发送邮件 /// </summary> /// <param name="frommail">发件人邮箱</param> /// <param name="tomail">收件人邮箱</param> /// <param name="authorizationcode">发件人授权码</param> /// <param name="replyto">收件人回复邮件默认接收地址(不设置也可以)</param> /// <param name="ccmail">邮件抄送人</param> /// <param name="filepath">附件地址</param> /// <param name="sendpeoplecall">收件人称呼</param> /// <param name="collectsampledate">收样时间</param> /// <returns></returns> public msgmodel sendmails(string frommail,list<string> tomail,string authorizationcode,string replyto, list<string> ccmail,list<string> filepath,string sendpeoplecall,string collectsampledate) { try { //实例化发送邮件类 mailmessage mailmessage = new mailmessage(); //邮件的优先级 分为 low normal high 通常用normal即可 mailmessage.priority = mailpriority.normal; //发送人邮件地址 mailmessage.from = new mailaddress(frommail); //收件人邮件地址 //考虑群发邮件 foreach(var r in tomail) { mailmessage.to.add(new mailaddress(r)); } if (replyto == "" || replyto == null) { replyto = frommail; } //对方回复邮件时默认的接收地址(可以不设置) //mailmessage.replyto = new mailaddress(replyto); if (ccmail != null) { //邮件抄送 支持 群发 抄送 foreach (var r in ccmail) { mailmessage.cc.add(r); } } //如果邮件标题包含中文,这里要设置编码方式 否则会出现乱码 mailmessage.subjectencoding = encoding.getencoding(936); //邮件正文是否是html 格式 mailmessage.isbodyhtml = true; //邮件标题 mailmessage.subject = $@" report-{collectsampledate}"; //邮件内容 mailmessage.body = $@" dear {sendpeoplecall}, "; mailmessage.attachments.clear(); if (filepath != null&&filepath.count>0) { foreach (var r in filepath) { var urls = system.appdomain.currentdomain.basedirectory.tostring() + r;//获取项目的绝对 //将附件添加到邮件 mailmessage.attachments.add(new attachment(urls)); //获取设置此电子邮件的发送通知 mailmessage.deliverynotificationoptions = deliverynotificationoptions.onsuccess; } } //实例化 smtpclient类 smtpclient client = new smtpclient(); client.host = getclienthost(frommail); //使用安全加密连接 client.enablessl = true; client.port = 587;//默认是25 此处设置成587 //不和请求一块发送 client.usedefaultcredentials = false; //client.deliverymethod = smtpdeliverymethod.network; //验证发送人身份(发件人的邮箱,邮箱里生成的授权码) client.credentials = new networkcredential(frommail,authorizationcode); //如果发送失败,smtp 服务器将发送 失败邮件告知fromemail mailmessage.deliverynotificationoptions= deliverynotificationoptions.onfailure; client.send(mailmessage); return new msgmodel { status = true, msg = "发送邮件成功" , data = "" }; } catch(exception ex) { return new msgmodel { status = false, msg = "发送邮件失败!错误:" + ex.message, data="" }; } }
/// <summary> /// 根据发送邮箱 识别发件服务器地址 /// </summary> /// <param name="fromemail"></param> /// <returns></returns> public string getclienthost(string fromemail) { var host = ""; if (fromemail.length != 0) { var addressstr = fromemail.trim().split(new char[] { '@','.'}); switch (addressstr[1]) { case "163": host = "smtp.163.com"; break; case "126": host = "smtp.126.com"; break; case "qq": host = "smtp.qq.com"; break; case "gmail": host = "smtp.gmail.com"; break; case "hotmail": host = "smtp.live.com";//outlook邮箱 //client.port = 587; break; case "foxmail": host = "smtp.foxmail.com"; break; case "sina": host = "smtp.sina.com.cn"; break; default: host = "smtp.exmail.qq.com";//qq企业邮箱 break; } } return host; }
发送邮箱,以及授权码都放在配置文件webconfig 中,这里不展示。
另外:项目是部署到阿里服务器的,此项目邮件发送端口是587,因此在阿里服务器需要设置允许端口587进出。
在此基础上本地调试可正常发送,部署到服务器上就发送失败,经过查阅相关博客,不断的尝试其他博客的解决方法,其中一个博客中说:本地调试发送了邮件成功后,tx那边认为你当前发送邮件的地址为常用的邮件发送地址,再部署到服务器上的时候,tx就认为你是发送广告,就被禁止当前地址发送邮箱,需要解除禁止。禁止一时半会不知道咋去解禁,于是尝试着替换一个qq邮箱账号进行发送邮件,结果真的是发送成功了。
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