Rules of validating email addresses
I wanted to check if the list contains well formatted entries.
Do you know any tool or web-service to check and give me a list of invalid addresses ? I was really looking for a basic synatx check, so i will stay with Rafe's idea (i will do it with Java). Probably the simplest way to validate an email is to send a message to it.
There are three types of validation rules in Access: 1.
You can use an expression to perform calculations, manipulate characters, or test data. For example, an expression can check for one of a series of values, such as "Tokyo" Or "Moscow" Or "Paris" Or "Helsinki".Back in the days of yore, you could just connect to the user's mail server and use the VRFY command and verify that an email address was valid, but spammers abused that privilege and we all lost out.You can vet or validate data in Access desktop databases as you enter it by using validation rules.Expressions can also perform mathematical operations. For example, the expression You can add a field validation rule and/or a record validation rule.A field validation rule checks input to a field, and is applied when the focus leaves the field.Typically, you use a form validation rule instead of a field validation rule if the rule was specific only to that form and not to the table no matter where it was used.This article explains how to use validation rules and validation text in table fields and form controls.The steps in the section Add a validation rule to a table explain how to add validation rules to table fields.The steps in the section Add a validation rule to a control on a form, later in this article, explain how to add rules to the properties in individual controls.You can use the expression builder to help you format the rule correctly.Validation rules can be set in either table design or table datasheet view.