smtp - Getting Error Transport error code was 0x80040217 while Sending Email in Asp.Net

Question

I am trying to send Email

But I am getting this Error.

The message could not be sent to the SMTP server. The transport error code was 0x80040217. The server response was not available

any one having any idea about it please Help me

Answer 1

Discovered that you can also get this error when Gmail's security settings don't allow messages to be sent from the address you intend to use. I had to enable access for less secure apps for my account in question by:

1. Logging into the address you want to use for sending email from Excel.
2. Visit the page https://www.google.com/settings/security/lesssecureapps
3. Click Enable Less Secure Apps.
4. Click Done.