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SmtpPermission Class

.NET Framework 4

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

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

Namespace:  System.Net.Mail
Assembly:  System (in System.dll)
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[SerializableAttribute]
public sealed class SmtpPermission : CodeAccessPermission, 
	IUnrestrictedPermission

The SmtpPermission type exposes the following members.

  Name Description
Public method SmtpPermission(Boolean) Initializes a new instance of the SmtpPermission class with the specified state.
Public method SmtpPermission(PermissionState) Initializes a new instance of the SmtpPermission class using the specified permission state value.
Public method SmtpPermission(SmtpAccess) Initializes a new instance of the SmtpPermission class using the specified access level.
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  Name Description
Public property Access Gets the level of access to SMTP servers controlled by the permission.
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  Name Description
Public method AddPermission Adds the specified access level value to the permission.
Public method Assert Declares that the calling code can access the resource protected by a permission demand through the code that calls this method, even if callers higher in the stack have not been granted permission to access the resource. Using Assert can create security issues. (Inherited from CodeAccessPermission.)
Public method Copy Creates and returns an identical copy of the current permission. (Overrides CodeAccessPermission.Copy().)
Public method Demand Forces a SecurityException at run time if all callers higher in the call stack have not been granted the permission specified by the current instance. (Inherited from CodeAccessPermission.)
Public method Deny Obsolete. Prevents callers higher in the call stack from using the code that calls this method to access the resource specified by the current instance. (Inherited from CodeAccessPermission.)
Public method Equals Determines whether the specified CodeAccessPermission object is equal to the current CodeAccessPermission. (Inherited from CodeAccessPermission.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method FromXml Sets the state of the permission using the specified XML encoding. (Overrides CodeAccessPermission.FromXml(SecurityElement).)
Public method GetHashCode Gets a hash code for the CodeAccessPermission object that is suitable for use in hashing algorithms and data structures such as a hash table. (Inherited from CodeAccessPermission.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method Intersect Creates and returns a permission that is the intersection of the current permission and the specified permission. (Overrides CodeAccessPermission.Intersect(IPermission).)
Public method IsSubsetOf Returns a value indicating whether the current permission is a subset of the specified permission. (Overrides CodeAccessPermission.IsSubsetOf(IPermission).)
Public method IsUnrestricted Returns a value indicating whether the current permission is unrestricted.
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method PermitOnly Prevents callers higher in the call stack from using the code that calls this method to access all resources except for the resource specified by the current instance. (Inherited from CodeAccessPermission.)
Public method ToString Creates and returns a string representation of the current permission object. (Inherited from CodeAccessPermission.)
Public method ToXml Creates an XML encoding of the state of the permission. (Overrides CodeAccessPermission.ToXml().)
Public method Union Creates a permission that is the union of the current permission and the specified permission. (Overrides CodeAccessPermission.Union(IPermission).)
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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.

The following code example creates an instance of an SmtpPermission.

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

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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