If you have not configured credentials properly like this error will occur. Your must need to include Credentials for secure connection then only it will be authenticated.
var client = new SmtpClient("yourserver", 80)
client.Credentials = new System.Net.NetworkCredential(adminEmail, adminPassword);
you can also check these links hope these are help you...
http://www.infinetsoft.com/Post/How-to-configure-godaddy-email-account-using-net/56
Post your comments / questions
Recent Article
- FieldError: Cannot resolve keyword 'id' into field in Django project
- How to hide the ID field from the Django admin?
- It is impossible to add a non nullable field without specifying a default. Django error
- ImportError: cannot import name 'url' from 'django.conf.urls' - Django Error
- How to Enable Virtualization in BIOS Security Settings in Intel Processors For Android Studio?
- Dependency 'androidx.activity:activity:1.8.0' requires libraries and applications that depend on it.
- AttributeError: 'NoneType' object has no attribute 'get_text' - Python
- ModuleNotFoundError: No module named 'openpyxl' - Python
Related Article