| MailBeeSmtpOptionalCommandNotSupportedException Class |
The exception that is thrown when the SMTP server responds with a negative reply to
an optional SMTP command.
Inheritance HierarchySystemObject
SystemException
SystemApplicationException
MailBeeMailBeeException
MailBeeMailBeeNetworkException
MailBeeMailBeeRemoteHostException
MailBeeMailBeeProtocolException
MailBeeMailBeeEmailProtocolException
MailBeeMailBeeEmailProtocolNegativeResponseException
MailBee.SmtpMailMailBeeSmtpNegativeResponseException
MailBee.SmtpMailMailBeeSmtpOptionalCommandNotSupportedException
SystemException
SystemApplicationException
MailBeeMailBeeException
MailBeeMailBeeNetworkException
MailBeeMailBeeRemoteHostException
MailBeeMailBeeProtocolException
MailBeeMailBeeEmailProtocolException
MailBeeMailBeeEmailProtocolNegativeResponseException
MailBee.SmtpMailMailBeeSmtpNegativeResponseException
MailBee.SmtpMailMailBeeSmtpOptionalCommandNotSupportedException
Namespace: MailBee.SmtpMail
Assembly: MailBee.NET (in MailBee.NET.dll) Version: 12.5.0 build 687 for .NET 4.5
SyntaxThe MailBeeSmtpOptionalCommandNotSupportedException type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | MailBeeSmtpOptionalCommandNotSupportedException | Initializes a new instance of the MailBeeSmtpOptionalCommandNotSupportedException class |
Methods| Name | Description | |
|---|---|---|
 | Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
| GetBaseException | When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetObjectData | When overridden in a derived class, sets the SerializationInfo with information about the exception. (Inherited from Exception.) |
| GetType | Gets the runtime type of the current instance. (Inherited from Exception.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| ToString | Creates and returns a string representation of the current exception. (Inherited from Exception.) |
Properties| Name | Description | |
|---|---|---|
 | Data | Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.) |
| ErrorCode |
Gets the error code.
(Inherited from MailBeeException.) |
| HelpLink | Gets or sets a link to the help file associated with this exception. (Inherited from Exception.) |
| HResult | Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.) |
| InnerException | Gets the Exception instance that caused the current exception. (Inherited from Exception.) |
| IsTransientError |
Gets the status of whether the failure is permanent (the client should not retry
later) or transient (the client may retry later).
(Inherited from MailBeeSmtpNegativeResponseException.) |
| Message | Gets a message that describes the current exception. (Inherited from Exception.) |
| Protocol |
Gets application-level protocol of the current connection.
(Inherited from MailBeeRemoteHostException.) |
| RemoteEndPoint |
Gets a reference to the end point of the server host.
(Inherited from MailBeeRemoteHostException.) |
| RemoteHostName |
Gets the host name of the server.
(Inherited from MailBeeRemoteHostException.) |
| ResponseCode |
Gets a 3-digit SMTP response status code.
(Inherited from MailBeeSmtpNegativeResponseException.) |
| ResponseEncoding |
Gets the encoding which was used to convert response bytes received from the server
into a string.
(Inherited from MailBeeEmailProtocolNegativeResponseException.) |
| ResponseString |
Gets the string which contains the negative response data.
(Inherited from MailBeeEmailProtocolNegativeResponseException.) |
| Source | Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.) |
| StackTrace | Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.) |
| TargetSite | Gets the method that throws the current exception. (Inherited from Exception.) |
| WasConnected |
Gets if the connection with the server had already been established to the moment when the exception occurred.
(Inherited from MailBeeRemoteHostException.) |
Events| Name | Description | |
|---|---|---|
 | SerializeObjectState | Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.) |
RemarksThis exception is never thrown in the application code. Instead, MailBee catches it, and raises ErrorOccurred event passing the exception instance as the Reason parameter value.
This exception indicates the SMTP server does not support an optional SMTP command which was sent to the server by MailBee. For instance, MailBee may try to send EHLO command in order to to initiate SMTP session and learn the server capabilities. The SMTP server, however, may not support it. In this case, MailBee continues normal execution and tries regular HELO command to initiate SMTP session (although ESMTP extensions, which could be supported if the failed command succeeded, will now be disabled). However, ErrorOccurred event is still raised to let the application code know that some features will be disabled.
See Also