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| |
| <div class="section"> |
| <h2><a name="Introduction"></a>Introduction</h2> |
| |
| <p>The mail transport allows to send and receive messages using MIME compliant mail messages. The transport sender |
| transmits outgoing messages using SMTP, while the transport listener connects to one or more mail accounts |
| and periodically polls these accounts for new incoming messages. The implementation is based on |
| <a class="externalLink" href="http://java.sun.com/products/javamail/">JavaMail</a> and therefore supports any mail store protocol |
| for which a JavaMail provider is available.</p> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Transport_listener"></a>Transport listener</h2> |
| |
| <div class="section"> |
| <h3><a name="Configuration"></a>Configuration</h3> |
| |
| <div> |
| <pre> <transportReceiver name="mailto" class="org.apache.axis2.transport.mail.MailTransportListener"/></pre></div> |
| </div> |
| |
| <div class="section"> |
| <h3><a name="Endpoint_configuration"></a>Endpoint configuration</h3> |
| |
| <p>Endpoints can be configured both at the transport level and at the service level. In order to receive messages using |
| the mail transport, the listener or the service must be configured with a set of parameters |
| to access the corresponding mailbox account. If messages from the mail account should be |
| directly dispatched to a given service, than the parameters must be specified on that service. |
| If on the other hand messages from that account can't be pre-dispatched to a specific service |
| (e.g. because the account is used to receive responses to outgoing messages), then the parameters |
| must be added to the <tt>transportReceiver</tt> element in <tt>axis2.xml</tt>.</p> |
| |
| <p>All parameters starting with <tt>mail.</tt> are |
| interpreted as JavaMail environment properties. The most relevant are <tt>mail.<i><protocol></i>.host</tt> |
| and <tt>mail.<i><protocol></i>.user</tt>, where <tt><i><protocol></i></tt> is typically <tt>pop3</tt> |
| or <tt>imap</tt>. Assuming that Sun's JavaMail implementation is used, the complete list of supported properties for these |
| two protocols can be found <a class="externalLink" href="http://java.sun.com/products/javamail/javadocs/com/sun/mail/pop3/package-summary.html">here</a> |
| and <a class="externalLink" href="http://java.sun.com/products/javamail/javadocs/com/sun/mail/imap/package-summary.html">here</a>.</p> |
| |
| <p>In additional to the JavaMail environment properties, the following transport specific service parameters are |
| used:</p> |
| |
| <table border="0" class="table table-striped"> |
| |
| <tr class="a"> |
| |
| <th>Parameter</th> |
| |
| <th>Required</th> |
| |
| <th>Description</th> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.PollInterval</td> |
| |
| <td>No</td> |
| |
| <td>The poll interval in seconds.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.Address</td> |
| |
| <td>Yes</td> |
| |
| <td>The address used to calculate the endpoint reference for the service. It is assumed that mails |
| sent to this address will be delivered to the mailbox account configured for the service. |
| Note that the transport has no means to validate this value and an incorrect address will not |
| be detected.</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>mail.<i><protocol></i>.password</td> |
| |
| <td>Yes</td> |
| |
| <td>The password for the mailbox account.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.Protocol</td> |
| |
| <td>Yes</td> |
| |
| <td>The mail store protocol to be used. The value must be protocol identifier recognized by JavaMail. |
| Usual values are <tt>pop3</tt> and <tt>imap</tt>. Note that the SSL variants of these two protocols |
| are not considered as distinct protocols. Rather, SSL is configured using the appropriate JavaMail |
| environment properties.</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.mail.ContentType</td> |
| |
| <td>No</td> |
| |
| <td>This parameter allows to override the content type of incoming messages. This parameter |
| is useful if the service can only receive messages of a single content type and the client |
| is known to send incorrect content type information. If this parameter is set, the |
| <tt>Content-Type</tt> MIME header in incoming messages is ignored.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.ReplyAddress</td> |
| |
| <td>No</td> |
| |
| <td>The reply-to address to be used when no From or Reply-To header is present in the |
| request message.</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.mail.Folder</td> |
| |
| <td>No</td> |
| |
| <td>The folder to read messages from. Defaults to <tt>INBOX</tt>.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.PreserveHeaders, transport.mail.RemoveHeaders</td> |
| |
| <td>No</td> |
| |
| <td>These two properties control which MIME headers of the received message will be stored |
| in the <tt>TRANSPORT_HEADERS</tt> property of the message context. Both parameters expect a |
| comma separated list of header names as value. <tt>transport.mail.PreserveHeaders</tt> specifies |
| a whitelist of headers to retain, while <tt>transport.mail.RemoveHeaders</tt> specifies a |
| blacklist of headers to remove. Note that the two parameters should not be used simultaneously.</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.mail.ActionAfterProcess</td> |
| |
| <td>No</td> |
| |
| <td>Determines what the transport should do with the message after successful processing. |
| Possible values are <tt>MOVE</tt> and <tt>DELETE</tt>. The default value is <tt>DELETE</tt>.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.ActionAfterFailure</td> |
| |
| <td>No</td> |
| |
| <td>Determines what the transport should do with the message if processing fails. |
| Possible values are <tt>MOVE</tt> and <tt>DELETE</tt>. The default value is <tt>DELETE</tt>. |
| [FIXME: we should reconsider this; it is dangerous!]</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.mail.MoveAfterProcess</td> |
| |
| <td>Conditional</td> |
| |
| <td>Specifies the destination folder if <tt>transport.mail.ActionAfterProcess</tt> |
| is <tt>MOVE</tt>.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.MoveAfterFailure</td> |
| |
| <td>Conditional</td> |
| |
| <td>Specifies the destination folder if <tt>transport.mail.ActionAfterFailure</tt> |
| is <tt>MOVE</tt>.</td> |
| </tr> |
| |
| <tr class="b"> |
| |
| <td>transport.mail.MaxRetryCount</td> |
| |
| <td>No</td> |
| |
| <td>The number of connection attempts. When the maximum number of retries is |
| exceeded, a new poll is scheduled after the normal poll interval. |
| The default value is 0, i.e. connection failures are simply ignored.</td> |
| </tr> |
| |
| <tr class="a"> |
| |
| <td>transport.mail.ReconnectTimeout</td> |
| |
| <td>No</td> |
| |
| <td>The interval between two connection attempts if the first failed. |
| The default value is 0, i.e. a new connection is attempted immediately. |
| [FIXME: either it is not implemented as intended or the name of the property is misleading; it is not a timeout, but an interval]</td> |
| </tr> |
| </table> |
| </div> |
| |
| <div class="section"> |
| <h3><a name="Content_extraction"></a>Content extraction</h3> |
| |
| <p>Content is extracted from incoming mails using the following rules:</p> |
| |
| <ol style="list-style-type: decimal"> |
| |
| <li>If the content type of the message is not <tt>multipart/mixed</tt>, the message is extracted |
| from the body of the message.</li> |
| |
| <li>If the content type of the message is <tt>multipart/mixed</tt>, the listener will attempt to |
| find a MIME part with a content type different from <tt>text/plain</tt> and for which a |
| message builder is registered. If a matching part is found, the message will be extracted |
| from that part. Otherwise, the listener will extract the message from |
| the last <tt>text/plain</tt> part if a message builder is registered for that content type. |
| Finally, if no message builder is registered for any of the content types appearing in the multipart |
| message, an error is triggered.</li> |
| </ol> |
| |
| <p>Note that these rules only apply if the content type has not been overridden using the |
| <tt>transport.mail.ContentType</tt> property. If this property is set, the message will always be |
| extracted from the body of the message and support for <tt>multipart/mixed</tt> is disabled.</p> |
| |
| <p>In all cases the transport listener will use the corresponding message builder registered in the |
| Axis configuration to build the SOAP infoset from the message.</p> |
| |
| <p>The special rules for <tt>multipart/mixed</tt> are designed to enable the following use cases:</p> |
| |
| <ul> |
| |
| <li>Allow humans to send messages to a Web service using a standard mail client. The user |
| can do so by adding the message as attachment to the mail. Note that this only works |
| if the mail client correctly sets the <tt>Content-Type</tt> header on the attachment. |
| This works best for SOAP 1.1 messages: when attaching a file with suffix <tt>.xml</tt>, |
| most mail clients will set the content type to <tt>text/xml</tt>, exactly as required |
| for SOAP 1.1.</li> |
| |
| <li>Allow clients to send a human readable message together with the actual message. |
| This is useful if the message may be read by a human before being processed.</li> |
| </ul> |
| |
| <p>Note that these rules don't interfere with the support for SOAP with Attachments, because |
| SwA uses <tt>multipart/related</tt>.</p> |
| </div> |
| </div> |
| |
| <div class="section"> |
| <h2><a name="Transport_sender"></a>Transport sender</h2> |
| |
| <div class="section"> |
| <h3><a name="Configuration"></a>Configuration</h3> |
| |
| <div> |
| <pre> <transportSender name="mailto" class="org.apache.synapse.transport.mail.MailTransportSender"> |
| <parameter name="mail.smtp.host">smtp.gmail.com</parameter> |
| <parameter name="mail.smtp.port">587</parameter> |
| <parameter name="mail.smtp.starttls.enable">true</parameter> |
| <parameter name="mail.smtp.auth">true</parameter> |
| <parameter name="mail.smtp.user">synapse.demo.0</parameter> |
| <parameter name="mail.smtp.password">mailpassword</parameter> |
| <parameter name="mail.smtp.from">synapse.demo.0@gmail.com</parameter> |
| </transportSender></pre></div> |
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