Once your account has been granted Administrative Access over your Organization's message archive, you can follow these steps to access:

1. Go to https://login.postini.com
2. Log in to your Message Security service, and select the Administration Console option.
3. Click the Message Archiving link in the upper-right corner.

Depending on your privileges, Message Archiving opens to either the Search or Discovery tab. With either tab, you have access to the Email Search panel.

To conduct a search, you have to enter a date range and at least one other criterion.

To enter your search criteria:

1. Set the date range for your search.
2. In the Match All/Any Words fields, enter words for which you want to search in the body, header, or attachment.
3. Use the Mailflow list to select Inbound Messages.
4. Use the Sort By list to select how your search results are sorted:
5. Select the Has Attachments check box to find only messages with attachments.
6. Search for messages based on the sender and/or recipient.
   1. Use the default configuration to search for any or all senders or recipients.
   2. Click the question mark for information about how to enter addresses.
      1. Click Search From/To separately to enter a separate list of addresses for the From and To fields.
   3. Click the question mark for information about how to enter addresses.
      1. Whether you are searching by Any/All Participants, or searching From/To Separately, you can click Look Up to use the Company Directory panel to search for a user’s identity, which includes all email addresses and email aliases registered for that user on your message security service.
7. After you have entered all your criteria, click Search Archive

Download the file below "Postini Archiving Quick Start" to see more details on what other features you can use.