The De-Duplication Filter (wgnsevdd.dll) passes e‑mails to the De-Duplication database, which stores a unique ID for each email. Using this unique ID, the De-Duplication database can inform the De-Duplication Filter if an e‑mail has already been processed. Using the example (De-Duplication filter architecture diagram), the New York copy of the email is processed first, and the other two copies are then identified as duplicates.
The De-Duplication database enables you to locate and remove duplicate emails. To do this, the database stores a unique ID for each email, which is identical for all duplicate e‑mails. This enables the De-Duplication database to filter out e‑mails that have already been processed.
In the example (De-Duplication filter architecture diagram), an email is sent from a user in the New York office to the All Marketing distribution list. Without the De-Duplication filter, three identical e‑mails would be stored in the email archive, using up valuable storage space. Instead, only a single copy of the email is archived.
CA DataMinder can integrate with the Symantec Enterprise Vault archive solution through a CA DataMinder custom filter, wgnsev.dll. This is a custom filter for an Exchange Journaling task that works with Enterprise Vault. In this guide, the term ‘EV server agent’ refers to this custom filter.
You can optionally link the EV server agent to policy engines in order to apply policy and add smart tags to each email. You can then also use the policy engine to generate CA DataMinder email events if required.
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