question realated sending mail

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The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at

how can i solve it

Posted 3-Mar-14 20:04pm

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*dan!sh* · Answer 1 · 2014-03-03T20:07:00

Solution 1

Check your SMTP a settings if it requires secure connection. If yes, set EnableSsl property to true.

Also check for credentials you are providing for connecting.

Posted 3-Mar-14 20:07pm

dan!sh

Krunal Rohit · Answer 2 · 2014-03-03T20:12:00

Solution 2

Quote:
The SMTP server requires a secure connection or the client was not authenticated.

Which means that you have to set true to the enableSsl.
And it might be possibility that you might have entered wrong user name and password, so check that as well.

-KR

Posted 3-Mar-14 20:12pm

Krunal Rohit

Aravindba · Answer 3 · 2014-03-03T20:13:00

Hi U try create send mail system.so u choose smpt.if u use SMPT u need to use one dummy email account or u use ur own email account,but u need to give username,password,port ect. for gmail port is 587.so without username password u cant send mail.

try this links
Send Mail / Contact Form using ASP.NET and C#[^]

http://www.aspdotnet-suresh.com/2010/11/introduction-this-article-i-will.html[^]

[^]

Regards
Aravind