>>>>It's spammers dream to have such server(s). :)
>>>>
>>>You're completely right.. I did not think about that..
>>>
>>>Hey Sergey.. What about to solve deal like that:
>>>
>>>In the end of each installation of our software I'd like to send e-mail (with the costumer's data) addressed to our e-mail
>>>
>>>Is there a way to catch the smtp server of user's machine ?
>>>
>>>I meant.. of any e-mail account installed on his machine..
>>>
>>>Thanks Sergey
>>
>>Did you know that you can send email to your own account without a username and password? its how emails are actually delivered. Just simply use your own mailserver as the SMTP server. Then send yourself messages without authentication. Same deal for your program.
>
>Hi Brian
>
>You meant, using in FROM field my own account ??
>
>Tks
>
>Claudio

It doesn't matter what the from field is. The TO field must exist on that server. ie. the account must actually be on the target mail server, not be a routed address.