smtp server blacklist

  Spam has become a serious problem. In order to win the war against spam, we use 18 weapons. The Blacklist, whitelist, and gray list should be the most basic tools in this battle against spam, this article will elaborate on how enterprises can

Failed to send the email with the following error message: mail02.tsingtao.com.cn: 554 service unavailable; client host [hrbanlv.com] blocked using barracuda reputation; http://www.barracudanetworks.com/reputation? R = 1 & IP = 119.167.225.182 query

How to receive error messages returned by the smtp server For example, the mail address does not exist, is it incorrect, or is not sent successfully? Requirement: In fact, I just want to add the Invalid Address, or failed to send the email multiple

通常，我们可能因为某些用户发送了一些非常规邮件，邮件出口地址被一些权威网站列入黑名单，导致大量业务邮件无法正常发送。 这时候，我们可以通过powershell写一些关于IP地址检测的脚本，并列入计划任务，最大程度上降低邮件出口地址被列入黑名单产生的业务影响，脚本内容如下：#获取页面信息$web = (invoke-webrequest

Today, when you use Phpmailer to send SMTP mail, you are prompted for an SMTP Error:could not authenticate error, where the password account is correct, and the mailbox is set to turn on SMTP. Google Baidu over again, some say that the server has

Now the Internet spam is more and more, if set up your MailServer security settings is an important issue. Now, for example, the most popular MDaemon Mail server, let's discuss the security settings for MDaemon. Recommended reading: MDaemon Use

Postfix Anti-Spam technology-Linux Enterprise Application-Linux server application information. The following is a detailed description. The Anti-Spam function of MTA is to filter sessions during MTA processing. This filter not only filters the Spam

Spam has become one of the biggest headaches. In the Windows operating system, you may have had enough trouble with spam to avoid spam harassment on the Linux operating system platform, it is very important to counter and filter junk emails. The

Article Title: Basic Anti-Spam skills in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Spam has

1. Overview E-Mail is one of the most commonly used network applications, and has become an important channel for communication. But spam spam most people, and recent surveys show that 93% of respondents are dissatisfied with the amount of junk mail