Darin,
AFAIK there is no any built in way in ASP.NET,
however it can be achieved by protocol level TCP communication.
Consider this example:
http://www.eggheadcafe.com/articles/20030316.asp
Look at this client server conversation:
c: ehlo myhost
s: 250 ok
c: mail from:me@my.com
s: 250 sender ok
c: rcpt to:co************@server.com
s: 250 recipient ok
c: rcpt to:wr**********@server.com
s: 550 invalid address
This way you can detect if an address is valid or invalid.
Be infored that some anti-spam configured MTAs accept
*all* recipient email addresses by default, to fight 'email harvestor'
programs, so your verification may go incorrect
http://en.wikipedia.org/wiki/Mail_transfer_agent
--
Hope this helps,
Zeeshan Mustafa, MCSD
"darin dimitrov" <da************@hotmail.com> wrote in message
news:2b**************************@posting.google.c om...
Hello,
Is there a way to verify that a particular account exists on SMTP
server before sending email to it in an ASP.NET web application?