CATEGORIZER performs following functions

Recipient Resolution: The e-MAIL address of the recipient is resolved to decide whether the recipient has GOT a mailbox in the EXCHANGE Organization or an external e-mail address

Routing Resolution: Once the information regarding the recipient is resolved, the ultimate destination for the mail is ROUTED, and the next hop are determined

Content Conversion: Once the mail has reached its determined address, the SMTP is converted into readable format like HTML, rich text format or plain text

Categorizer performs following functions

Recipient Resolution: The e-mail address of the recipient is resolved to decide whether the recipient has got a mailbox in the Exchange Organization or an external e-mail address

Routing Resolution: Once the information regarding the recipient is resolved, the ultimate destination for the mail is routed, and the next hop are determined

Content Conversion: Once the mail has reached its determined address, the SMTP is converted into readable format like HTML, rich text format or plain text