Suppose your company has alphanumeric pagers or text messaging cell phones, each with a unique email address. Rather than give out the pager address, such as [email protected], you would rather use a more simple naming convention that involves your company's domain name. If your regular email address was [email protected], perhaps you would like to have your pagers address be [email protected] or [email protected]. You can see that this would be an address that would be far easier (and more private) for others to remember than the pager number. Here's how you do it:
If you are going to use a subdomain (pager.comsphere.com in the example above) you will need to let Exchange know that it is responsible for email being sent to that domain. If you are going to use the mailbox name to denote a pager or phone, skip to the next section.
Next you need to create a Contact for the pager or phone, specify its' external address and then give it an internal SMTP address.
This is how it works: A message is sent to [email protected]. Exchange receives the message and finds a match in AD (the contact we created). It also sees that the primary email address for the contact is an external SMTP address. Exchange automatically forwards the message to this primary address. No mailbox mess and automatic forwarding. This also works for those of you using Exchange 5.5. Make a Custom Recipient and use the same logic: external address for the primary address and an additional SMTP address with the internal namespace.