how to check if email is blacklisted

if (eregi ("^[_.0-9a-z-]+@") ([0-9a-z][0-9a-z-]+.) +[a-z]$ ", $email)) { echo" your e-mail through preliminary check "; } ?> In this sentence, the first is to apply a eregi function, this function is also good to understand. Find a book, and I'll give you an explanation.: Syntax: int ereg (string pattern, string stri

The email is returned. The error message "Helo command rejected: Invalid name" is incorrect. helorejectedI configured my own postfix + dovecot server. After outlook is configured, the same account can be successfully sent and received on some computers, and a Bounce Message will appear when an

When you register on a forum, there is usually an e-mail address verification function, when you enter an illegal format, there will be some kind of error message. We can use the following rule expressionEreg ("^[a-za-z0-9_] @[a-za-z0-9-]. [ a-za-z0-9-.] $] ", $email); But the function of the above equation is to check

If you have any questions please contact me: http://www.webjx.com web@webjx.comReprint please indicate the source When you register on a forum, there is usually an e-mail address verification function, when you enter an illegal format, there will be some kind of error message. We can use the following rule expression Ereg ("^[a-za-z0-9_]+@[a-za-z0-9\-]+\.[ A-za-z0-9\-\.] +$] ", $email); But the function

PHP code used to verify whether the email address is valid Sometimes, when entering a form on a website, the user may enter an incorrect email address. This function can verify whether the email address is valid. Function is_validemail ($

/*** Check if the email address is legal *@paramEmail *@returntrue Legal false not valid*/ Importjava.util.regex.*;//a processing class that provides regular expressions in the package Public classhello{ Public Static voidMain (String[]args) {String email= "[Email protected

When registering a user with WordPress, the password is usually sent to the mailbox by email. But in many cases, for example, some servers do not support the mail function. There are also some mailbox problems, network problems, and so on, resulting in failure to send emails. This section describes how to send an email when registering a user and display the pas

Sometimes, when filling out a form on a website, the user may enter the wrong email address, which verifies that the email address is valid. function Is_validemail ($email) { $check = 0; if (Filter_var ($ema