SmtpPermission Class (System.Net.Mail)

.NET Framework Class Library

SmtpPermission Class

Controls access to Simple Mail Transport Protocol (SMTP) servers.

Namespace: System.Net.Mail
Assembly: System (in System.dll)

Syntax

Visual Basic (Declaration)

<SerializableAttribute> _
Public NotInheritable Class SmtpPermission _
    Inherits CodeAccessPermission _
    Implements IUnrestrictedPermission

Visual Basic (Usage)

Dim instance As SmtpPermission

[SerializableAttribute]
public sealed class SmtpPermission : CodeAccessPermission, 
    IUnrestrictedPermission

Visual C++

[SerializableAttribute]
public ref class SmtpPermission sealed : public CodeAccessPermission, 
    IUnrestrictedPermission

JScript

public final class SmtpPermission extends CodeAccessPermission implements IUnrestrictedPermission

Remarks

The SmtpPermission and SmtpPermissionAttribute classes control access to SMTP host computers. The SmtpClient class demands an SmtpPermission when sending electronic mail to the SMTP host for delivery.

The SmtpAccess enumeration specifies the level of access controlled by an instance of this permission.

Examples

The following code example creates an instance of an SmtpPermission.

public static SmtpPermission CreateConnectPermission()
{
    SmtpPermission connectAccess = new 
        SmtpPermission(SmtpAccess.Connect);
    Console.WriteLine("Access? {0}", connectAccess.Access);
    return connectAccess;
}

Visual C++

static SmtpPermission^ CreateConnectPermission()
{
    SmtpPermission^ connectAccess = 
        gcnew SmtpPermission(SmtpAccess::Connect);
    Console::WriteLine("Access? {0}", connectAccess->Access);
    return connectAccess;
}

Inheritance Hierarchy

System..::.Object
System.Security..::.CodeAccessPermission
System.Net.Mail..::.SmtpPermission

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0, 2.0

Reference

SmtpPermission Members

System.Net.Mail Namespace