Re: RegularExpressionValidator and fake email addresses

Suits me fine.
http://www.emailverify.net/Demo.aspx results:

[email protected] IS valid
[email protected] is NOT valid

Thanks.
/James

On 5/24/07, Efran Cobisi <[email protected]> wrote:
>
> Hello James,
>
> There are many components out there which you can use to test for email
> address correctness and existence. All of them perform a sort of check
> against the smtp server responsible for the provided email address, if
> one exists. Here is a short list of products you could use within your
> ASP.NET projects:
>
> http://www.emailverify.net
> http://www.aspnetmx.com
> http://www.hexillion.com
>
> Personally I would opt for EmailVerify.NET, which is a project I'm
> currently involved in, because it also supports a sort of false positive
> check (used for smtp servers with anti-spam feature turned on) and, btw,
> is cheaper than the other two.
> Keep in mind, however, that in the end there is no a 100% guarantee that
> an email address does actually exist until you send a message and check
> for a possible bounce. And even if you send a message, there is no
> guarantee a bounce will be sent in the event the recipient does not
> actually exist. So, use these components with care.
>
> Hope this helps.
>
> --
> Efran Cobisi
> http://www.cobisi.com
>
> James Hearne wrote:
> > No, this isn't applicable. I don't want to send out any email. I just
> > want
> > to check if the provided email address does exist or not.
> > How can I do that?
> >
> > /James
> >
> > On 5/24/07, Paul van Brenk <[email protected]> wrote:
> >>
> >> Send an email to confirm their subscription.. all addresses that are
> not
> >> yet confirmed are not valid and deleted after 48 hrs?
> >>
> >> Paul
> >>
> >> -----Original Message-----
> >> From: Discussion of building .NET applications targeted for the Web
> >> [mailto:[email protected]] On Behalf Of James Hearne
> >> Sent: Thursday, May 24, 2007 15:48
> >> To: [email protected]
> >> Subject: [DOTNET-WEB] RegularExpressionValidator and fake email
> >> addresses
> >>
> >> Hi gurus,
> >> in our web site we often receive a lot of feedback from fake email
> >> addresses, like [email protected]; people sign up to our newsletter
> >> using
> >> fake addresses too.
> >> Very bad...
> >> In each page used to enter email addresses we have already inserted
> >> a RegularExpressionValidator which works quite well; the problem is
> that
> >> email addresses like the aforementioned one are actually valid ones!
> >>
> >> Could you point me to the right direction?
> >> Thanks.
> >>
> >> /James
> >>
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