Exchange is down - Can I use OWA?

OK, here is my path:

Internet -> Hosted Spam filter -> Exchange1 -> Exchange2

Exchange2 is down.  I want to give my users  on that system a way to read their email while we work to bring their server back up.  If there were only one server, mail would be getting queued at the spam server and I could direct users to login there and read new, inbound email.

Can I do something similar with Exchange1?  Can I have the Exchange2 users login to the Exchange1 server via OWA?  Would they be able to see their incoming email or would it be stuck in a queue for delivery to the proper server?

Also, of course, they would like to be able to send outbound email as well.

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OWA accessibility would need the mailbox database up and any CAS server up. If the mailbox database where user mailbox resides is down then you may try performing a move-mailbox using the Configuration only switch and that should allow you to achieve what you want.
Refer below article and see if this answers your query maybe:

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Seth SimmonsSr. Systems AdministratorCommented:
if their mailboxes are on exchange2 and that server is down, they cannot access it
exchange1 users would be fine

unless users have cached mode enabled in their outlook profile, they won't see their mail
with cached mode they have offline copy of their mailbox but can't send mail

if exchange1 is the HT then yes, exchange1 queue should increase for exchange2 users until exchange2 is up then it will process mail from exchange1
Diwakar SharmaCommented:

If you are using exchange 2007 than it is possible by using database portability. you can use below article to perform database portability.

Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

Tim EdwardsIT Team Lead - Unified Communications & CollaborationCommented:
What version of Exchange are you running? how is your environment structured?
Adam FarageEnterprise ArchCommented:

All OWA is a website that is hosted on the CAS itself, and it allows communication through the CAS role to the Mailbox role to obtain mailbox user data. If the mailbox database itself is down, the OWA page might show up but it will not allow you to authenticate or actually access the mailbox, as the database needs to be mounted.

So short answer: no - if the mailbox database is down then OWA is useless.
crapshooterAuthor Commented:
seth2740 is correct.  I was a little quick and mistakenly only gave the points to the last posted answer.  My apologies.  The points should be split among seth2740, S_K_S and evrydayzawrkday.

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