Package com.sun.mail.smtp

Class SMTPTransport

  • All Implemented Interfaces:
    java.lang.AutoCloseable
    Direct Known Subclasses:
    SMTPSSLTransport
    public class SMTPTransport
extends Transport
    This class implements the Transport abstract class using SMTP for message submission and transport.

    See the com.sun.mail.smtp package documentation for further information on the SMTP protocol provider.

    This class includes many protected methods that allow a subclass to extend this class and add support for non-standard SMTP commands. The issueCommand(java.lang.String, int) and sendCommand(java.lang.String) methods can be used to send simple SMTP commands. Other methods such as the mailFrom() and data() methods can be overridden to insert new commands before or after the corresponding SMTP commands. For example, a subclass could do this to send the XACT command before sending the DATA command: 

            protected OutputStream data() throws MessagingException {
            if (supportsExtension("XACCOUNTING"))
                issueCommand("XACT", 25);
            return super.data();
        }
    See Also:
    ConnectionEvent, TransportEvent

    • Constructor Summary

      Constructors 
      Constructor Description
      SMTPTransport​(Session session, URLName urlname)
      Constructor that takes a Session object and a URLName that represents a specific SMTP server.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void close()
      Close the Transport and terminate the connection to the server.
      void connect​(java.net.Socket socket)
      Start the SMTP protocol on the given socket, which was already connected by the caller.
      java.lang.String getAuthorizationId()
      Gets the authorization ID to be used for authentication.
      java.lang.String getExtensionParameter​(java.lang.String ext)
      Return the parameter the server provided for the specified service extension, or null if the extension isn't supported.
      int getLastReturnCode()
      Return the return code from the last response we got from the server.
      java.lang.String getLastServerResponse()
      Return the last response we got from the server.
      java.lang.String getLocalHost()
      Get the name of the local host, for use in the EHLO and HELO commands.
      boolean getNoopStrict()
      Is the NOOP command required to return a response code of 250 to indicate success?
      java.lang.String getNTLMDomain()
      Gets the NTLM domain to be used for NTLM authentication.
      boolean getReportSuccess()
      Should we report even successful sends by throwing an exception? If so, a SendFailedException will always be thrown and an SMTPAddressSucceededException will be included in the exception chain for each successful address, along with the usual SMTPAddressFailedException for each unsuccessful address.
      boolean getRequireStartTLS()
      Should we require the STARTTLS command to secure the connection?
      boolean getSASLEnabled()
      Is SASL authentication enabled?
      java.lang.String[] getSASLMechanisms()
      Get the list of SASL mechanisms to consider if SASL authentication is enabled.
      java.lang.String getSASLRealm()
      Gets the SASL realm to be used for DIGEST-MD5 authentication.
      boolean getStartTLS()
      Should we use the STARTTLS command to secure the connection if the server supports it?
      boolean getUseCanonicalHostName()
      Should SASL use the canonical host name?
      boolean getUseRset()
      Should we use the RSET command instead of the NOOP command in the @{link #isConnected isConnected} method?
      boolean isConnected()
      Check whether the transport is connected.
      boolean isSSL()
      Is this Transport using SSL to connect to the server?
      void issueCommand​(java.lang.String cmd, int expect)
      Send the command to the server.
      void sendMessage​(Message message, Address[] addresses)
      Send the Message to the specified list of addresses.
      void setAuthorizationID​(java.lang.String authzid)
      Sets the authorization ID to be used for authentication.
      void setLocalHost​(java.lang.String localhost)
      Set the name of the local host, for use in the EHLO and HELO commands.
      void setNoopStrict​(boolean noopStrict)
      Set whether the NOOP command is required to return a response code of 250 to indicate success.
      void setNTLMDomain​(java.lang.String ntlmDomain)
      Sets the NTLM domain to be used for NTLM authentication.
      void setReportSuccess​(boolean reportSuccess)
      Set whether successful sends should be reported by throwing an exception.
      void setRequireStartTLS​(boolean requireStartTLS)
      Set whether the STARTTLS command should be required.
      void setSASLEnabled​(boolean enableSASL)
      Set whether SASL authentication is enabled.
      void setSASLMechanisms​(java.lang.String[] mechanisms)
      Set the list of SASL mechanisms to consider if SASL authentication is enabled.
      void setSASLRealm​(java.lang.String saslRealm)
      Sets the SASL realm to be used for DIGEST-MD5 authentication.
      void setStartTLS​(boolean useStartTLS)
      Set whether the STARTTLS command should be used.
      void setUseCanonicalHostName​(boolean useCanonicalHostName)
      Set whether SASL should use the canonical host name.
      void setUseRset​(boolean useRset)
      Set whether the RSET command should be used instead of the NOOP command in the @{link #isConnected isConnected} method.
      int simpleCommand​(java.lang.String cmd)
      Send the command to the server and return the response code from the server.
      boolean supportsExtension​(java.lang.String ext)
      Return true if the SMTP server supports the specified service extension.

      • Methods inherited from class java.lang.Object

        equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

    • Constructor Detail

      • SMTPTransport

        public SMTPTransport​(Session session,
                     URLName urlname)
        Constructor that takes a Session object and a URLName that represents a specific SMTP server.
        Parameters:
        session - the Session
        urlname - the URLName of this transport

    • Method Detail

      • getLocalHost

        public java.lang.String getLocalHost()
        Get the name of the local host, for use in the EHLO and HELO commands. The property mail.smtp.localhost overrides mail.smtp.localaddress, which overrides what InetAddress would tell us.
        Returns:
        the local host name

      • setLocalHost

        public void setLocalHost​(java.lang.String localhost)
        Set the name of the local host, for use in the EHLO and HELO commands.
        Parameters:
        localhost - the local host name
        Since:
        JavaMail 1.3.1

      • connect

        public void connect​(java.net.Socket socket)
             throws MessagingException
        Start the SMTP protocol on the given socket, which was already connected by the caller. Useful for implementing the SMTP ATRN command (RFC 2645) where an existing connection is used when the server reverses roles and becomes the client.
        Parameters:
        socket - the already connected socket
        Throws:
        MessagingException - for failures
        Since:
        JavaMail 1.3.3

      • getAuthorizationId

        public java.lang.String getAuthorizationId()
        Gets the authorization ID to be used for authentication.
        Returns:
        the authorization ID to use for authentication.
        Since:
        JavaMail 1.4.4

      • setAuthorizationID

        public void setAuthorizationID​(java.lang.String authzid)
        Sets the authorization ID to be used for authentication.
        Parameters:
        authzid - the authorization ID to use for authentication.
        Since:
        JavaMail 1.4.4

      • getSASLEnabled

        public boolean getSASLEnabled()
        Is SASL authentication enabled?
        Returns:
        true if SASL authentication is enabled
        Since:
        JavaMail 1.4.4

      • setSASLEnabled

        public void setSASLEnabled​(boolean enableSASL)
        Set whether SASL authentication is enabled.
        Parameters:
        enableSASL - should we enable SASL authentication?
        Since:
        JavaMail 1.4.4

      • getSASLRealm

        public java.lang.String getSASLRealm()
        Gets the SASL realm to be used for DIGEST-MD5 authentication.
        Returns:
        the name of the realm to use for SASL authentication.
        Since:
        JavaMail 1.3.1

      • setSASLRealm

        public void setSASLRealm​(java.lang.String saslRealm)
        Sets the SASL realm to be used for DIGEST-MD5 authentication.
        Parameters:
        saslRealm - the name of the realm to use for SASL authentication.
        Since:
        JavaMail 1.3.1

      • getUseCanonicalHostName

        public boolean getUseCanonicalHostName()
        Should SASL use the canonical host name?
        Returns:
        true if SASL should use the canonical host name
        Since:
        JavaMail 1.5.2

      • setUseCanonicalHostName

        public void setUseCanonicalHostName​(boolean useCanonicalHostName)
        Set whether SASL should use the canonical host name.
        Parameters:
        useCanonicalHostName - should SASL use the canonical host name?
        Since:
        JavaMail 1.5.2

      • getSASLMechanisms

        public java.lang.String[] getSASLMechanisms()
        Get the list of SASL mechanisms to consider if SASL authentication is enabled. If the list is empty or null, all available SASL mechanisms are considered.
        Returns:
        the array of SASL mechanisms to consider
        Since:
        JavaMail 1.4.4

      • setSASLMechanisms

        public void setSASLMechanisms​(java.lang.String[] mechanisms)
        Set the list of SASL mechanisms to consider if SASL authentication is enabled. If the list is empty or null, all available SASL mechanisms are considered.
        Parameters:
        mechanisms - the array of SASL mechanisms to consider
        Since:
        JavaMail 1.4.4

      • getNTLMDomain

        public java.lang.String getNTLMDomain()
        Gets the NTLM domain to be used for NTLM authentication.
        Returns:
        the name of the domain to use for NTLM authentication.
        Since:
        JavaMail 1.4.3

      • setNTLMDomain

        public void setNTLMDomain​(java.lang.String ntlmDomain)
        Sets the NTLM domain to be used for NTLM authentication.
        Parameters:
        ntlmDomain - the name of the domain to use for NTLM authentication.
        Since:
        JavaMail 1.4.3

      • getReportSuccess

        public boolean getReportSuccess()
        Should we report even successful sends by throwing an exception? If so, a SendFailedException will always be thrown and an SMTPAddressSucceededException will be included in the exception chain for each successful address, along with the usual SMTPAddressFailedException for each unsuccessful address.
        Returns:
        true if an exception will be thrown on successful sends.
        Since:
        JavaMail 1.3.2

      • setReportSuccess

        public void setReportSuccess​(boolean reportSuccess)
        Set whether successful sends should be reported by throwing an exception.
        Parameters:
        reportSuccess - should we throw an exception on success?
        Since:
        JavaMail 1.3.2

      • getStartTLS

        public boolean getStartTLS()
        Should we use the STARTTLS command to secure the connection if the server supports it?
        Returns:
        true if the STARTTLS command will be used
        Since:
        JavaMail 1.3.2

      • setStartTLS

        public void setStartTLS​(boolean useStartTLS)
        Set whether the STARTTLS command should be used.
        Parameters:
        useStartTLS - should we use the STARTTLS command?
        Since:
        JavaMail 1.3.2

      • getRequireStartTLS

        public boolean getRequireStartTLS()
        Should we require the STARTTLS command to secure the connection?
        Returns:
        true if the STARTTLS command will be required
        Since:
        JavaMail 1.4.2

      • setRequireStartTLS

        public void setRequireStartTLS​(boolean requireStartTLS)
        Set whether the STARTTLS command should be required.
        Parameters:
        requireStartTLS - should we require the STARTTLS command?
        Since:
        JavaMail 1.4.2

      • isSSL

        public boolean isSSL()
        Is this Transport using SSL to connect to the server?
        Returns:
        true if using SSL
        Since:
        JavaMail 1.4.6

      • getUseRset

        public boolean getUseRset()
        Should we use the RSET command instead of the NOOP command in the @{link #isConnected isConnected} method?
        Returns:
        true if RSET will be used
        Since:
        JavaMail 1.4

      • setUseRset

        public void setUseRset​(boolean useRset)
        Set whether the RSET command should be used instead of the NOOP command in the @{link #isConnected isConnected} method.
        Parameters:
        useRset - should we use the RSET command?
        Since:
        JavaMail 1.4

      • getNoopStrict

        public boolean getNoopStrict()
        Is the NOOP command required to return a response code of 250 to indicate success?
        Returns:
        true if NOOP must return 250
        Since:
        JavaMail 1.4.3

      • setNoopStrict

        public void setNoopStrict​(boolean noopStrict)
        Set whether the NOOP command is required to return a response code of 250 to indicate success.
        Parameters:
        noopStrict - is NOOP required to return 250?
        Since:
        JavaMail 1.4.3

      • getLastServerResponse

        public java.lang.String getLastServerResponse()
        Return the last response we got from the server. A failed send is often followed by an RSET command, but the response from the RSET command is not saved. Instead, this returns the response from the command before the RSET command.
        Returns:
        last response from server
        Since:
        JavaMail 1.3.2

      • getLastReturnCode

        public int getLastReturnCode()
        Return the return code from the last response we got from the server.
        Returns:
        return code from last response from server
        Since:
        JavaMail 1.4.1

      • sendMessage

        public void sendMessage​(Message message,
                        Address[] addresses)
                 throws MessagingException,
                        SendFailedException
        Send the Message to the specified list of addresses.

        If all the addresses succeed the SMTP check using the RCPT TO: command, we attempt to send the message. A TransportEvent of type MESSAGE_DELIVERED is fired indicating the successful submission of a message to the SMTP host.

        If some of the addresses fail the SMTP check, and the mail.smtp.sendpartial property is not set, sending is aborted. The TransportEvent of type MESSAGE_NOT_DELIVERED is fired containing the valid and invalid addresses. The SendFailedException is also thrown.

        If some of the addresses fail the SMTP check, and the mail.smtp.sendpartial property is set to true, the message is sent. The TransportEvent of type MESSAGE_PARTIALLY_DELIVERED is fired containing the valid and invalid addresses. The SMTPSendFailedException is also thrown.

        MessagingException is thrown if the message can't write out an RFC822-compliant stream using its writeTo method.

        Specified by:
        sendMessage in class Transport
        Parameters:
        message - The MimeMessage to be sent
        addresses - List of addresses to send this message to
        Throws:
        SMTPSendFailedException - if the send failed because of an SMTP command error
        SendFailedException - if the send failed because of invalid addresses.
        MessagingException - if the connection is dead or not in the connected state or if the message is not a MimeMessage.
        See Also:
        TransportEvent

      • isConnected

        public boolean isConnected()
        Check whether the transport is connected. Override superclass method, to actually ping our server connection.
        Overrides:
        isConnected in class Service
        Returns:
        true if the service is connected, false if it is not connected

      • issueCommand

        public void issueCommand​(java.lang.String cmd,
                         int expect)
                  throws MessagingException
        Send the command to the server. If the expected response code is not received, throw a MessagingException.
        Parameters:
        cmd - the command to send
        expect - the expected response code (-1 means don't care)
        Throws:
        MessagingException - for failures
        Since:
        JavaMail 1.4.1

      • simpleCommand

        public int simpleCommand​(java.lang.String cmd)
                  throws MessagingException
        Send the command to the server and return the response code from the server.
        Parameters:
        cmd - the command
        Returns:
        the response code
        Throws:
        MessagingException - for failures
        Since:
        JavaMail 1.4.1

      • supportsExtension

        public boolean supportsExtension​(java.lang.String ext)
        Return true if the SMTP server supports the specified service extension. Extensions are reported as results of the EHLO command when connecting to the server. See RFC 1869 and other RFCs that define specific extensions.
        Parameters:
        ext - the service extension name
        Returns:
        true if the extension is supported
        Since:
        JavaMail 1.3.2

      • getExtensionParameter

        public java.lang.String getExtensionParameter​(java.lang.String ext)
        Return the parameter the server provided for the specified service extension, or null if the extension isn't supported.
        Parameters:
        ext - the service extension name
        Returns:
        the extension parameter
        Since:
        JavaMail 1.3.2