email-validation

Using PHP, what are some ways to generate a random confirmation code that can be stored in a DB and be used for email confirmation? I can't for the life of me think of a way to generate a unique number that can be generated from a user's profile. That way I can use a function to make the number small enough to be included in the URL ( see this link ). Remember, the user has to click on the link to "confirm/activate" his/her account. If I can't use numbers, I have no problems using both letters and numbers. With that said, I've tried hashing the username along with a "salt" to generate the

Scenario: I have a contact form on my web app, it gets alot of spam. I am validating the format of email addresses loosely i.e. ^.+@.+\..+$ I am using a spam filtering service (defensio) but the spam scores returned are overlapping with valid messages. At a threshold of 0.4 some spam gets through and some customer's questions are wrongly thrown in a log and an error displayed. All of the spam messages use fake email addresses e.g. zxmzxm@ywduasm.com Dedicated PHP5 Linux server in US, mysql, logging spam only, emailing the non spam messages (not stored). Proposal: Use php's checkdnsrr(preg

I would like to know of the possible ways to block disposable email addresses from registering in my website. For simplicity, let's take the example where the registration form of the website is done with HTML and PHP. Any ideas, solutions or suggestions would be greatly appreciated. This is tough, because neither whitelisting nor blacklisting are an option. By whitelisting certain domains, you disallow people with email domains that are unknown to you (but might be perfectly valid), while by blacklisting you have to update the list of blacklisted domains on a daily basis, since new "10 minute

In iOS App, how to add Email validation on UITextField? Rog Use NSPredicate and Regex: - (BOOL)validateEmailWithString:(NSString*)email { NSString *emailRegex = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}"; NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegex]; return [emailTest evaluateWithObject:email]; } For a bunch of emails separated by a comma: - (NSMutableArray*)validateEmailWithString:(NSString*)emails { NSMutableArray *validEmails = [[NSMutableArray alloc] init]; NSArray *emailArray = [emails componentsSeparatedByString:@","]; for (NSString

I have an input field taking an email address: <h:inputText value="#{register.user.email}" required="true" /> How can I validate the entered value as a valid email address using regex in JSF 2 / PrimeFaces? Here is how: Using it myself... <h:inputText id="email" value="#{settingsBean.aFriendEmail}" required="true" label="Email" validatorMessage="#{settingsBean.aFriendEmail} is not valid"> <f:validateRegex pattern="[\w\.-]*[a-zA-Z0-9_]@[\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]" /> </h:inputText> <p:message for="email" /> Daniel. All regular expression attempts to validate the email

I'm working on an email validation regex in PHP and I need to know how long the TLD could possibly be and still be valid. I did a few searches but couldn't find much information on the topic. So how long can a TLD possibly be? tripleee DNS allows for a maximum of 63 characters for an individual label. Dan Dascalescu The longest TLD currently in existence is 24 characters long, and subject to change. The maximum TLD length specified by RFC 1034 is 63 octets. To get the length of the longest existing TLD: wget -qO - http://data.iana.org/TLD/tlds-alpha-by-domain.txt | tail -n+2 | wc -L Here's