vb.net smtp email verification (not syntax but physical email)

**mb2000inc** · 07-28-2009, 03:28 PM

I have a contact form that I've been using for the past several months, really simple code (ASP/VB.NET). But I want to add a code to it that goes out and verifies that the email address being used in the form is valid and not some trash set of characters in the same format as an email address.
(example: "asdfghjkl@lkjnhg.com")

I've seen codes out there that do it, but they want money for it...

If you know of a freebie source code out there that will do it without having to use chillkat, that would be great.

(preferred language = vb.net)

Thanks in advance.

PS, in a case like this (preventing spam) would it be better to do the email verification this way or would it be better to use a free captcha?

**stbuchok** · 08-04-2009, 12:33 PM

the only way that I can think of that might work is to create a script that pings the domain, which would then verify that the domain at least exists. This does not verify that the email address exists.

As far as I know there is no way, besides someone replying to verify that an email address exists (or getting an error from the email server saying that it couldn't send the email)

**Nisam90** · 08-09-2009, 12:20 PM

I too don't think there is a way of doing that. I mean direct way.. But something like this can be done..
We can send an email to mail address, it goes well bla bla..
Just an idea, it might not be practical

**Derek227** · 08-27-2009, 04:30 PM

I think the closest you are going to get to that is to make sure the format is correct for an email address. ex. "xxxxxxx@xxx.com" or something like that. Just make sure the '@' is there and the domain name. I cannot think of any other way to do what you are asking other than what has been mentioned.

**mb2000inc** · 08-27-2009, 06:16 PM

Yeah, I used expression validators for that.. but I just wanted to see if there was something that people used that went out to the server and double checked the email address...

but I can't find anything for free.

Thanks, again.

**Derek227** · 08-27-2009, 06:47 PM

no problem, sorry you did not find what you wanted.

**mb2000inc** · 08-27-2009, 07:14 PM

No biggie... They said that it's not worth the hassle or spending the bucks to do it...
So... it's their site. They want spam, it's all good by me.

**Derek227** · 08-27-2009, 07:19 PM

haha yep.