The exception that is thrown when the POP3 server responds with a negative reply to an optional POP3 command.

For a list of all members of this type, see MailBeePop3OptionalCommandNotSupportedException Members.

System.Object
   System.Exception
      System.ApplicationException
         MailBee.MailBeeException
            MailBee.MailBeeNetworkException
               MailBee.MailBeeRemoteHostException
                  MailBee.MailBeeProtocolException
                     MailBee.MailBeeEmailProtocolException
                        MailBee.MailBeeEmailProtocolNegativeResponseException
                           MailBee.Pop3Mail.MailBeePop3NegativeResponseException
                              MailBee.Pop3Mail.MailBeePop3OptionalCommandNotSupportedException

Thread Safety

Public static (Shared in Visual Basic) members of this type are safe for multithreaded operations. Instance members are not guaranteed to be thread-safe.

Remarks

This 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 POP3 server does not support an optional POP3 command which was sent to the server by MailBee. For instance, MailBee may try to send CAPA command in order to learn the server capabilities. The POP3 server, however, may not support it. In this case, MailBee continues normal execution and tries another methods to perform the current task or disables POP3 extensions which could be supported if the failed command succeeded. However, ErrorOccurred event is still raised to let the application code know that some features will be disabled.

Requirements

Namespace: MailBee.Pop3Mail

Assembly: MailBee.NET (in MailBee.NET.dll)

See Also

MailBeePop3OptionalCommandNotSupportedException Members | MailBee.Pop3Mail Namespace

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