c# - Unable to test SmtpClient.TimeOut -


i using visual studio 2010, .net 4.0 , trying test smtpclient.timeout property , throw smtpexception. however, when set timeout property 1 millisecond, still sends email seems sending under millisecond find interesting when inspect object can see private member variable called timedout set true, indicating in fact timed out.

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here code:

try {             mailmessage emailmsg = new mailmessage(this.emailfrom, this.emailto, this.emailsubject, msg);             //smtpclient emailclient = new smtpclient(this.emailserver);             smtpclient emailclient = new smtpclient();             emailclient.credentials = new system.net.networkcredential("username", "password");                   emailmsg.isbodyhtml = true;                 emailclient.timeout = properties.settings.default.smtptimeout;                 emailclient.timeout = 1;                  emailclient.send(emailmsg);                 sendingemail = true;              return sendingemail;         }         catch (exception ex)         {               // handle time out exception here.          }

has ever seen or know better way test this? right hitting gmail's smtp.

i believe can use telnet. turn on telnet , use ip smtp server. not connect should timeout. have not tested this.

http://technet.microsoft.com/en-us/library/aa995718(v=exchg.65).aspx


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