smtp

简单来说： SMTP是用来寄信的：端口25 POP3是用来收信的：端口110 1.SMTP Simple Mail Transfer Protocal，简单邮件传输协议。 SMTP的一个重要特点是它能够在传送中接力传送邮件，即邮件可以通过不同网络上的主机接力式传送。工作在两种情况下：一是电子邮件从客户机传输到服务器；二是从某一个服务器传输到另一个服务器。 SMTP是个请求/响应协议，它监听25号端口，用于接收用户的邮件请求，并与远端邮件服务器建立SMTP连接。 SMTP工作机制 SMTP通常有两种工作模式：发送SMTP和接收SMTP。具体工作方式为：发送SMTP在接到用户的邮件请求后，判断此邮件是否为本地邮件: 是——>直接投送到用户的邮箱； 否——>向DNS查询远端邮件服务器的MX纪录，并建立与远端接收SMTP之间的一个双向传送通道，此后SMTP命令由发送SMTP发出，由接收SMTP接收，而应答则反方面传送。一旦传送通道建立，SMTP发送者发送MAIL命令指明邮件发送者。如果SMTP接收者可以接收邮件则返回OK应答。SMTP发送者再发出RCPT命令确认邮件是否接收到。如果SMTP接收者接收，则返回OK应答；如果不能接收到，则发出拒绝接收应答（但不中止整个邮件操作），双方将如此重复多次。当接收者收到全部邮件后会接收到特别的序列，如果接收者成功处理了邮件，则返回OK应答。 2

I have a small application under Linux to receive an email with the use of smtpd.SMTPServer. Here is the small test code: class CustomSMTPServer(smtpd.SMTPServer): def process_message(self, peer, mailfrom, rcpttos, data): print 'Receiving message from:', peer print 'Message addressed from:', mailfrom print 'Message addressed to :', rcpttos print 'Message length :', len(data) return server = CustomSMTPServer(('0.0.0.0', 25), None) asyncore.loop() I have the following issues: (1) When using this piece of code, the computer sending the email gets the following message: 502 Error: command "EHLO"

when I connect to a POP3 account using Gmail, It shows POP3 Access Fails for that label Here I attach a screenshot of the problem. Error: Server is temporarily unavailable. Server returned error "Error in RETR command: no such message" I suggest you to try with a different email client, I had similar problem with gmail, but i was able to solved that using sparrow in mac. That´s Yahoo making our lives a little harder. I was able to use during a few months now the Yahoo account from Gmail. But today I started seeing that same error. There´s nothing you can do about it. Yahoo is blocking the Mail

I have Bonobo Git Server version 3.6 installed on my Win 7 PC. Today, I tried on forgotten password, but it popup error message saying Unable to send email. Validate SMTP settings. . How & where can I set the SMTP settings? Bonobo uses standard .NET smtp settings. These can be specified in the web.config for your Bonobo-installation. You can read the details here , but basically you should add a <mailSettings> group under configuration\system.net The following is a working albeit simple example. It is possible to use any smtp server and as you can read in the link, it is also possible to

import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Component @ConfigurationProperties(prefix = "emailClientInfo") public class EmailClientInfo { // 发件人邮箱的 SMTP 服务器地址, 必须准确, 不同邮件服务器地址不同, 一般(只是一般, 绝非绝对)格式为: smtp.xxx.com // 网易163邮箱的 SMTP 服务器地址为: smtp.163.com private String smtpHost ; // PS: 某些邮箱服务器为了增加邮箱本身密码的安全性，给 SMTP 客户端设置了独立密码（有的邮箱称为“授权码”）, // 对于开启了独立密码的邮箱, 这里的邮箱密码必需使用这个独立密码（授权码）。 private String password ; // 发件人地址 private String senderAddress ; // 发件人名字 private String senderName ; public String getSmtpHost() { return

Closed. This question is off-topic . It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I am complete novice to Postfix, just set up default Postfix for Ubuntu, tested it through telnet and it sent mail ok, but when I try to send mail through django (host='localhost', port='25', user='', password=''), I just get SMTPException: SMTP AUTH extension not supported by server. Here is my main.cf: https://gist.github.com/3348411 Could you please suggest, what I need to add to set up minimal working smtp