check if email domain is blacklisted

If you are a white-collar engineer, often sitting in the office and sending and receiving emails every day, you can use the Linux operating system in the company, so you have installed the mail system in the Linux operating system, but do you know the installation is successful? In Linux, how does one check whether the email system

Copy codeThe Code is as follows:/// /// Check whether the entered email address strEmail is valid. If it is invalid, true is returned./// Public bool CheckEmail (string strEmail){Int I, j;String strTmp, strResult;String strWords =

# ** The problem is solved. ** Key code: Check whether the email address is repeated quot; $ user_email $ _ POST [ quot; user_email quot;]; $ SQL quot; selectcount (*) fromuserswhereuser_email #39; $ user_email #39; quot; $ resultmysql_query ($ SQL, $ con); $ rowmysql_fetch_row ($ result ); if ($ row [0] gt; sel

"^\\w+ ([-_.]?" \\w+) *@\\w+ ([\\.-]?\\w+) * (\\.\\w{2,6}) +$ " This is my Java program to check the e-mail format is legitimate regular expression, see a blog post on the Internet, and I used the expression similar, reprinted over, for everyone to study together. ------------------------------The following are reproduced articles--------------------------------

A small task, to a containing thousands of domain name of Excel, to detect whether it has been registered, register to obtain a registered company, and to obtain the corresponding website can open normally, and finally to excel file rendering.1. At first, the thought is to read the domain name, through the HTTP call xinnet or the WHOIS query interface query Netwo

A friend:For example, if your mail server's fixed IP address is 218.5.x.x, you can use NSLookup to check whether reverse resolution is successful. C: \ Documents ents and Settings \ Administrator> NSLookup 218.5.xxx.xxxServer: FJ-DNS.fz.fj.cnAddress: 218.85.157.99 Name:Xxxxx.comAddress: 218.5.x.x If no reverse direction is