net10.0 
namespace System.Net.Mail
{
    public class SmtpFailedRecipientException : SmtpException
    {
        [EditorBrowsable(EditorBrowsableState.Never)]
        [Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId = "SYSLIB0051", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
        protected SmtpFailedRecipientException(SerializationInfo! info, StreamingContext context);
    }
}
nuget.org
0.0 %
Reference this API
.NET
5.06.07.08.09.010.0
.NET Core
3.03.1
.NET Framework
2.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Information specific to net10.0
Assembly

System.Net.Mail , Version=10.0.0.0, PublicKeyToken=cc7b13ffcd2ddd51

Referencing

The API is automatically referenced.

Obsolete SYSLIB0051: This API supports obsolete formatter-based serialization. It should not be called or extended by application code.
Platform Restrictions

This API is supported on any platform except for these:

  • wasi
  • Built-in API
  • Package-provided API