Temp forwarding email from one user to another?

Someone is out of the office for a couple weeks and is out of contact. Another employee is filling in for them using their own domain account and mailbox. What options do I have for forwarding copies of incoming email from the guy who's out to the guy filling in for him? I don't want to reset the password for the guy who's out and share it with anyone. I also don't want to redirect the email, meaning it won't be there for him when he comes back. We're using Exchange 2013.
Eric JackIT ManagerAsked:
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Pete LongTechnical ConsultantCommented:
Set-Mailbox -Identity “user-who-is-away” -DeliverToMailboxAndForward $true -ForwardingAddress user-who-isnt-away@your-domain.com

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Eric JackIT ManagerAuthor Commented:
Yeah, that sounds like it should work. I typically poke around the EAC and forget the command lines in EMS. That will keep a copy of all emails in the original mailbox, correct? Just need to make sure the manager is happy with the legal/ethical portion of this, which legally I think is okay since it is a company mailbox.
ZombieAutopsy81IT Manager/Network AdministratorCommented:
I like to use the Admin center, just if your curious. You can also manage the mailbox by rules if you only want specific messages forwarded.

William FulksSystems Analyst & WebmasterCommented:
Just go to the account properties in Exchange, go to the Mail Flow properties tab, and turn on forwarding but also leave the box checked for "deliver message to both..." - This way the original recipient will have all their email and the person covering for them will get a copy. When the original person gets back, just turn off the forwarding.
Eric JackIT ManagerAuthor Commented:
Thanks guys, this will do what I need.
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