check mail domain

[Marina]

when user submit his e-mail , is there a way to check if submitted mail domain
exists? I guess hat I can't check if e-mail exists without sending real email
and receiving error, but maybe at least I can check domain?
can I find on the net a package that can do it?

[Paul Clapham]

There is no way to do this, at least in real time. For example, my
company's mail server was down for nearly a day recently. During that
period it "didn't exist", but that doesn't mean you should consider my
e-mail address invalid.

If someone is giving you an e-mail address, they will give you a correct
address IF they want to get e-mail from you. If they don't want to get
e-mail from you, they will give you an incorrect address. If you insist on
a correct address, they will provide a valid address, perhaps one of the
addresses that you send copies of spam mail to for somebody to take action.
In other words, it is unnecessary to check e-mail addresses.

PC2

Marina <marina.laysha@gorefer.com> wrote in message
news:39d8a76e$1@news.devx.com...
>
> when user submit his e-mail , is there a way to check if submitted mail
domain
> exists? I guess hat I can't check if e-mail exists without sending real
email
> and receiving error, but maybe at least I can check domain?
> can I find on the net a package that can do it?