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| <h1 class="hidden">James Enterprise Mail Server</h1> |
| <h2>Emails at the heart of your business logic</h2> |
| </header> |
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| <section id="intro" class="main special"> |
| <div class=""> |
| <div class="content align-left"> |
| <header class="major"> |
| <h1>Deleted Messages Vault</h1> |
| </header> |
| |
| <p> |
| The goal of this document is to help you to understand better about this feature and to present you the following topics: |
| </p> |
| |
| <ul> |
| <li>What is Deleted Messages Vault ?</li> |
| <li>How to setup James with Deleted Messages Vault</li> |
| <li>Deleted Messages Vault administration</li> |
| <li>Example: Starting James with enabled Deleted Messages Vault by docker compose</li> |
| </ul> |
| |
| <header class="major"> |
| <h2>What is Deleted Messages Vault ?</h2> |
| </header> |
| |
| <p>Deleted Messages Vault is a feature in James allowing you to:</p> |
| <ul> |
| <li>retain users deleted messages for some time</li> |
| <li>restore & export deleted messages by various criteria</li> |
| <li>permanently delete some retained messages</li> |
| </ul> |
| |
| <p> |
| If the Deleted Messages Vault is enabled, when users delete their mails, and by that we mean when he tries |
| to definitely delete them by emptying the trash, James will retain these mails into the Deleted Messages Vault. |
| And only administrators can interact with this component via WebAdmin REST APIs. |
| </p> |
| <p> |
| One useful use of that feature is to allow an administrator to restore some mails an user may have deleted by accident. |
| However, mails are not retained forever as you have to configure a retention period before using it (with a one year retention by default if not defined). |
| It's also possible to permanently delete a mail if needed. |
| </p> |
| <p> |
| Deleted mails for exporting & restoring can be filtered via several criteria based on mail properties. |
| At the moment, these are supported mail properties for filtering: |
| </p> |
| <ul> |
| <li>deletion date (ISO-8601 Date String) |
| <ul> |
| <li>supports before or equals operator</li> |
| <li>supports after or equals operator</li> |
| </ul> |
| </li> |
| <li>delivery date (ISO-8601 Date String) |
| <ul> |
| <li>supports before or equals operator</li> |
| <li>supports after or equals operator</li> |
| </ul> |
| </li> |
| <li>recipients (List of strings) |
| <ul> |
| <li>supports contains operator</li> |
| </ul> |
| </li> |
| <li>sender (String) |
| <ul> |
| <li>supports equal matching operator</li> |
| </ul> |
| </li> |
| <li>has attachment (Boolean) |
| <ul> |
| <li>supports equal matching operator</li> |
| </ul> |
| </li> |
| <li>origin mailboxes (List of strings) |
| <ul> |
| <li>supports contains matching operator</li> |
| </ul> |
| </li> |
| <li>subject (String) |
| <ul> |
| <li>supports equal matching operator</li> |
| <li>supports equal ignore case matching operator</li> |
| <li>supports contains matching operator</li> |
| <li>supports contains ignore case matching operator (with US locale)</li> |
| </ul> |
| </li> |
| </ul> |
| |
| <header class="major"> |
| <h2>How to setup James with Deleted Messages Vault</h2> |
| </header> |
| |
| <p> |
| In this section, we will guide you to setup James with Deleted Messages Vault by following the steps below: |
| </p> |
| <ul> |
| <li>Enable Deleted Messages Vault by configuring Pre Deletion Hooks</li> |
| <li>Configuring your BlobStore</li> |
| <li>Configuring the retention time for the Deleted Messages Vault</li> |
| </ul> |
| |
| <header class="major"> |
| <h4>Enable Deleted Messages Vault by configuring Pre Deletion Hooks</h4> |
| </header> |
| |
| <p> |
| By default, you need to configure a Pre Deletion Hook to let James use it. |
| Before deleting a mail in James, PreDeletionHooks will be triggered to execute all declared hooks. If all hook executions success, then James will process to delete that mail. |
| There is already a DeletedMessageVaultHook in James, its job is to store deleted mails into Deleted Messages Vault. Thus, you need to configure this hook in listeners.xml configuration file. |
| </p> |
| <p><b>NOTE:</b> From James 3.8.1 onward the DeletedMessageVaultHook should no longer be specified for Cassandra based products.</p> |
| |
| <p> |
| Sample DeletedMessageVaultHook configuration: |
| </p> |
| <pre><code> |
| <listeners> |
| <listener> |
| ... |
| </listener> |
| ... |
| <preDeletionHook> |
| <class>org.apache.james.vault.DeletedMessageVaultHook</class> |
| </preDeletionHook> |
| </listeners> |
| </code></pre> |
| <p> |
| More details about configuration & example is at <a href="/server/config-listeners.html">Pre Deletion Hook Configuration</a> |
| </p> |
| |
| <header class="major"> |
| <h4>Configuring your BlobStore</h4> |
| </header> |
| |
| <p> |
| The Deleted Messages Vault is using a BlobStore to store and manage the deleted messages. A BlobStore is a dedicated |
| component to store blobs, non-indexable content. There is different implementations available for the BlobStore on top |
| of Cassandra or file object storage services like Openstack Swift and AWS S3. |
| </p> |
| |
| <p> |
| Let's consider that we want to store those deleted messages into an Openstack Swift object storage. So the configuration |
| in the blob.properties file should look similar to this: |
| </p> |
| |
| <pre><code> |
| implementation=s3 |
| objectstorage.namespace=james |
| objectstorage.s3.endPoint=http://scality:8080/ |
| objectstorage.s3.region=eu-west-1 |
| objectstorage.s3.accessKeyId=accessKey1 |
| objectstorage.s3.secretKey=verySecretKey1 |
| </code></pre> |
| |
| <p> |
| If you want to dig deeper into the subject, or use an other implementation, you can find more details about this at the |
| <a href="/server/config-blobstore.html">BlobStore Configuration</a> page. |
| </p> |
| |
| <header class="major"> |
| <h4>Configuring the retention time for the Deleted Messages Vault</h4> |
| </header> |
| |
| <p> |
| To do this, you have to create a configuration file <b>deletedMessageVault.properties</b>, then put it into the <b>conf</b> directory of James. |
| There is only one available property you may want to configure at the moment: |
| </p> |
| <ul> |
| <li> |
| <b>retentionPeriod</b>: represent for the period deleted messages allowed to be stored in Deleted Messages Vault (default of one year). |
| </li> |
| </ul> |
| |
| <p> |
| Example: |
| </p> |
| <pre><code> |
| retentionPeriod=1y |
| </code></pre> |
| <p> |
| More details about configuration & example can be found at |
| <a href="/server/config-vault.html">Deleted Messages Vault Configuration</a> |
| </p> |
| |
| <header class="major"> |
| <h2>Deleted Messages Vault administration</h2> |
| </header> |
| |
| <p> |
| These are supported WebAdmin features on top of Deleted Messages Vault. |
| You can have a look at the WebAdmin Deleted Messages Vault documentation <a href="/server/manage-webadmin.html#Deleted_Messages_Vault">here</a> |
| </p> |
| |
| <header class="major"> |
| <h4>WebAdmin Deleted Messages Vault exporting</h4> |
| </header> |
| |
| <p> |
| When the administrator needs to export some user's deleted messages, you are able to choose which exporting mechanism should be used. |
| At the moment there are two available exporting mechanisms: |
| </p> |
| |
| <ul> |
| <li> |
| <b>localFile</b>: This is a simple exporting mechanism. Through an export request, it retrieves deleted mails from Deleted Messages Vault, |
| then store them as a zip file in James Server local file system. Then it sends a mail with the absolute path of exported file to the targeted mail address. |
| </li> |
| <li> |
| <b>linshare</b>: Instead of exporting blobs to the local file system, using |
| <a href="https://www.linshare.org">LinShare</a> helps you upload your blobs and people |
| you have been sharing to can access those blobs by accessing the LinShare server and download them. |
| </li> |
| </ul> |
| |
| <p> |
| You can configure which kind of export mechanism you want to use in James by specifying <b>blob.export.implementation</b> property in blob.properties configuration file. |
| E.g: |
| </p> |
| |
| <pre><code> |
| blob.export.implementation=localFile |
| </code></pre> |
| |
| <p> |
| You can find more details about configuration & example at <a href="/server/config-blob-export.html">Blob Export Configuration</a> page |
| </p> |
| |
| <header class="major"> |
| <h2>Example: Starting James with enabled Deleted Messages Vault by docker compose</h2> |
| </header> |
| |
| <p> |
| And now to sum up everything we have seen until now and put it into practice, we will take |
| James cassandra-rabbitmq product for the example |
| </p> |
| |
| <p>First, get the template cassandra-rabbitmq product configuration:</p> |
| |
| <pre><code> |
| $ git clone https://github.com/apache/james-project |
| $ cp -rf james-project/server/apps/distributed-app/sample-configuration conf |
| </code></pre> |
| |
| <p>Then create the keystore file in the conf/ directory with the default password <code>james72laBalle</code> |
| |
| <pre><code> |
| $ keytool -genkey -alias james -keyalg RSA -keystore conf/keystore |
| </code></pre> |
| |
| <p>Second, modify <code>deletedMessageVault.properties</code> configuration file like in the previous example</p> |
| |
| <p>Third, modify <code>listeners.xml</code> to configure DeletedMessageVaultHook by adding preDeletionHook section at previous paragraph</p> |
| |
| <p> |
| Fourth, modify <code>blob.properties</code> file to configure the BlobStore that will be used and the file exporting mechanism, like |
| we saw previously as well. |
| </p> |
| |
| <p>Fifth, we will create a local folder for holding data out of the container:</p> |
| |
| <pre><code> |
| $ mkdir var |
| </code></pre> |
| |
| <p>Finally, starting a James Server by docker compose</p> |
| |
| <p>Getting James docker-compose.yml</p> |
| |
| <pre><code> |
| $ wget https://raw.githubusercontent.com/apache/james-project/master/server/apps/distributed-app/docker-compose.yml |
| </code></pre> |
| |
| <p>Add the following volumes for james service:</p> |
| |
| <pre><code> |
| volumes: |
| - $PWD/conf:/root/conf/ |
| - $PWD/var:/root/var/ |
| </code></pre> |
| |
| <p> |
| Then you can run it and you should have a James server with an enabled Deleted Messages Vault. You can then |
| refer to <a href="/server/manage-webadmin.html">WebAdmin documentation</a> to create a few users, domains, |
| mailboxes, and then connecting to it your favorite mail client to start sending messages between |
| those users and deleting them. |
| </p> |
| |
| <p> |
| And finally you can check more specifically the <a href="/server/manage-webadmin.html#Deleted_Messages_Vault">WebAdmin Deleted Messages Vault documentation</a> to explore all the possibilities of the vault. |
| </p> |
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