Sending Email in vb .Net 2003 using SMTP Sever

[Paridevi]

Hai,
i am getting the following error

system.runtime. interopservices .COMException.T he server rejected one or more recipient addresses.The server responce was:553 sorry, relaying denied from your location[59.92.120.52](#5.7.1)

in sending email from client machine.i have refered their SMTP Server name and i have added that in SMTPServer access in relay option.whta is the problem here can any one help me pls.thanks in advance.
regards
pari

[kenobewan]

Have you tried testing with your own email address?

[Chrace]

That's no .Net error though.

You need to allow relaying on your Exchange (or whatever mail server) for your IP address or LDAP login account.

"sorry, relaying denied from your location" should give you a hint there.

[Plater]

That error message is frequently the result of not being authenticated with the SMTP Server you are using. It's in place to help prevent abuse.
Try supply valid login credentials and see if that solves the problem.

[Engineer Intern]

as a follow up, (and do excuse my coding ignorance): but how can I make my to field dynamic. I have multiple checkboxes and depending on what is selected different email address can be used. I tried using neseted IF statements but turned into an ugly mess. Please help!

[Plater]

Well for the TO field you would want to have like:
user1@domain.co m; user2@domain.co m;

For every checkbox checked, add the username and a ";" to the TO field?