You can't do much, as you won't get a direct feedback. Typically the sender (from or reply-to) of the mail will get a feedback mail (but there is no garantee for that) from the receiving mail server. The format and content of the mail depends on the mail server and it's configuration (some even allow to custumize the template for this mail)
> -----Urspr�ngliche Nachricht----- > Von: Kunal Shah [mailto:[EMAIL PROTECTED]] > Gesendet: Donnerstag, 10. Oktober 2002 08:16 > An: tomcat user > Betreff: RE: How to validate email address in JSP by using javax.mail? > > > suppose there is an domain xyz.com accepting mails for its > user say there are a, b and c users and administrator which will > recieve mails for unresolve members > > i am sending one mail at [EMAIL PROTECTED] dummy is not valid > mailbox still the mesg will be delivered to administrator of > xyz.com. so there will be not send fail exception. > > what should be done in this case ? > -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
