Configuring account settings

The following procedure is part of the email archive account configuration process. For general procedures about how to configure an archive account, see “Configuring email archiving accounts” on page 656. For information about how to use the email archiving feature, see “Email archiving workflow” on page 656.

1. Go to Email Archiving > Archive Accounts.
2. Click New to create a new account or double click on an existing account to edit it.
3. For a new account, enter its name.

This account name holds archived email. You also use this account name as the login user name if you want to access archived email remotely through IMAP. Do not include spaces in the name.

4. In Password, enter the password for IMAP access if you want to access archived email remotely. Also enable IMAP access .
5. In Forward to, if you require it, enter an email address to which the FortiMail unit will forward a copy when it archives an email.
6. For Index type, specify whether you want to index the archived email. Email indexing helps to search the email messages in the archives more quickly. You can choose to index the email headers or the entire email messages.
7. Enable Email archiving status. If the account is not enabled, you cannot select it in other places where it is used.
8. Enable IMAP access if you want to access email archives through IMAP access.

Configuring rotation settings

The following procedure is part of the email archive account configuration process. For general procedures about how to configure an archive account, see “Configuring email archiving accounts” on page 656. For information about how to use the email archiving feature, see “Email archiving workflow” on page 656.

1. Go to Email Archiving > Archive Accounts.
2. Click New to create a new account or double click on an existing account to edit it.
3. Under Rotation Settings, enter the Mailbox rotation size and Mailbox rotation time.

When the mailbox reaches either the rotation size or time specified, whichever comes first, the email archiving mailbox is automatically renamed. The FortiMail unit generates a new mailbox file, where it continues saving email archives. You can access all rotated mailboxes through search.

4. In Archiving options when disk quota is full, specify what the FortiMail unit should do if it runs out of disk space. Select Overwrite to removes the oldest email archive folder in order to make space for the new archive or select Do not archive to stop archiving more email.

Whenever an archiving account reaches its disk quota, FortiMail may send an alert email to the administrator, if you enable this feature under Log and Report > Alert Email. For details, see “Configuring alert categories” on page 684.

Configuring destination settings

The following procedure is part of the email archive account configuration process. For general procedures about how to configure an archive account, see “Configuring email archiving accounts” on page 656. For information about how to use the email archiving feature, see “Email archiving workflow” on page 656.

1. Go to Email Archiving > Archive Accounts.
2. Click New to create a new account or double click on an existing account to edit it.
3. Under Destination Settings, select an archiving destination:
   • Local (the FortiMail unit’s local hard drive or a NAS server)
   • Remote (a remote FTP or SFTP storage server).
4. If Local is the archiving destination, enter the disk space quota in Local disk quota.

The total disk quota for all archiving accounts cannot exceed 20% of the total mail data disk size. For example, if the mail data disk has a size of 100 GB, a maximum of 20 GB can be used for email archiving. If you create 10 archiving accounts, you can only distribute a maximum of 20 GB among the 10 archiving accounts. This also means, if you assigns 20 GB quota to one account, there will be no quota available for the remaining 9 accounts.

If this quota is met and a new email must be archived, the FortiMail unit either automatically removes the oldest email archive folder in order to make space for the new archive or stops archiving, depending on the settings you specify under Rotation Settings (see “Configuring rotation settings” on page 659).

Before v4.0 MR3 Patch 3 release, the local disk quota setting applies to both the FortiMail local hard disk and the NAS server (for information about configuring NAS storage, see “Selecting the mail data storage location” on page 376). Starting from v4.0 MR3 Patch 3 release, this setting only applies to the FortiMail local disk. The default disk quota for a NAS server is 1 TB.

5. If Remote is the archiving destination, configure the following: