is email domain blacklisted

The company's Domino Mail Server was recently attacked by spamhaus In the XBL blacklist. The situation was urgent and all emails sent from the company to foreign customers were rejected, however, rejected emails are delayed in the shuttle fish spam gateway queue. In this case, only the XBL blacklist can be removed first, so that these emails can be sent first, and then perform the following self-check! In case it is

There are many spam advisory databases on the Internet, such as Spamhaus.For example, to query whether IP 1.2.3.4 is blacklisted by ahbl.org, you can use the following commandNslookup 4.3.2.1.dnsbl.ahbl.orgIf the returned result is non-existent domain, there is no problemIf

Tags: arch rom move contos content massive power enc via 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$web = (invoke-webrequest "https://www.talosintelligence.com/reputation_center/lookup?search=xxx.xxx.xxx.xxx"). Content#自定义邮件属性 Content$msg 1= "xxx.xxx.xxx.xxx blacklist, please check!"$msg 2= "MailAddress isn't included in the blacklist!"$SMTP = "SMTP Server" br/> $from = "[

(HELP, urgent) Red Hat Enterprise 5.6postfix external domain email rejected to the Company domain-Linux Enterprise Application-Linux server application information, the following is read details. The boss asked me to create an email server yesterday to implement basic functi

As a foreign trade company, we need to regularly send some marketing emails to our customers, about several thousand in batches. A few days ago, I attended a training session where sales people sold their foreign trade software to us. One of the features was to send development emails to customers. The advantages described in this article are as follows: 1. the email format is HTML .., so the mail

Domain Name detection and email domain name Detection Background: Recently, the company's public account domain name was blocked because the company's website was hacked and uploaded to an invalid webpage. So... The domain name unblocking process

SummaryThis article describes how to build a multi-domain email system on an Exchange 2000 Server.In daily management, we may encounter an email system that requires multi-domain name post-domain architecture and opens mailboxes for different users with different

What is a domain name? What makes a domain name? A domain name is the name used to search for a website on the internet. It is an important identifier on the internet and is equivalent

Product Feedback users always enter the wrong email domain name, so the email address obtained by the server is incorrect. For example, there are many users who always input a xxx@qq.com into a xxx@qq.con. This worries the backend, because the email address

Next-generation Domain Name Hijacking (different from using email hijacking)Remember the hijacking of the domain names of major websites in the second half of 2007.EmailThis time, the main character should be regardedMobile phone numberRight. The old domain name management can change the binding information through

Article Title: Construct a virtual domain email server unrelated to the System user. 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. Operating System: FreeBSD 4-stable 　　 Update ports 　　 Cvsup-gL 2-h cvsup.freebsdchina.org/usr

name, you can modify the configuration file of sendmail and add the domain name MX record. Sendmail can directly use the "-r account@domain.com" parameter to send mail at any source address, but the current mainstream mailbox will compare the source address and reverse resolution IP, if the email cannot be parsed or the resolved IP address does not match, the email