Validating Email

[User 3055467]

Hi, can any one tell me how to check whether an email id entered by a user is a valid one or not. I think it should be done using socket programming. I don't have any idea in socket programming. Kindly help me in solving this problem.

[Jeeva Jose]

Please use regular Expression.

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[User 3055467]

Hi, Email validation means not using Validation Controls in ASP.NET. I want to check whether the domain and that emailid exist or not. Suppose a user has entered an email like asd@yahoo.com In that I want to check whether that domain exist or not. Afterwards I want to check whether that email exist or not.

[DaveyM69]

The best I've managed to do in the past is look up the MX record for the domain - if one returns then it's about as close as you can get. Goole for MX record and C#. This[^] looks promising.