Send from IMAP / POP3 from Exchange Account

Posted on 2014-03-17
Last Modified: 2014-03-17
Is this possible? I have a client who is on an exchange network but uses a different email domain as it is a different part of the business. We would like to have access to his mailbox from other PCs / Accounts but since he doesn't send from the main domain account we cannot see his inbox / sent mail. Currently we have his Outlook setup with 2 accounts, Main Domain for local calendars / tasks and another account attached to his outlook for receiving & sending. I know i can receive his IMAP mail through exchange but we would also like him to be able to send from this account and have all the exchange features.
Question by:Eagle75au
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Expert Comment

by:Miguel Angel Perez Muñoz
ID: 39933597
This other domain is Exchange?
On that case, can access by OWA, POP3 and IMAP4 if administrator configures it

Author Comment

ID: 39933641
The main account is Exchange but we don't want to send from that Domain. We need to be able to view the mailbox with IMAP email from another clients Outlook, we currently have this setup with all the other Exchange account but being that we have this IMAP attached locally to his outlook we can't see the IMAP mailbox.
LVL 19

Expert Comment

by:Miguel Angel Perez Muñoz
ID: 39933678
I need some clarification about.

User has two mailboxes. One on local domain, another external, thats correct?
One mailbox has one email address, and another has another email address on another domain, is an alias on mailbox or are different? This mailboxes are in same server or separate?
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Author Comment

ID: 39933692
Two mailboxes is correct yes

Main exchange domain is (local)
Extra IMAP email is (external)
LVL 19

Expert Comment

by:Miguel Angel Perez Muñoz
ID: 39933792
And you want to send emails with from, thats ok?

Author Comment

ID: 39933810
Spot on! Unless there is another way we can view what's in the mailbox from other workstations exchange accounts
LVL 19

Accepted Solution

Miguel Angel Perez Muñoz earned 500 total points
ID: 39933834
You must not do this, some (most of them) uses validation server and another technical features to detect fake mail servers. If you send emails from your server using another domain that not held you, you are sending fake mails and probably those emails ends on junk mailbox.

You can try (but I do not recommend you because from internal to extenal flow may not work) this:

configure external email as your internal email:
create an alias on internal mailbox with external email address
create an smtp connector to this external domain to use external smtp address with less cost than your external smtp connector to rest of destinations:

but may happens when somebody sends to external, Exchange detects this email is internal, not use external connector and email never arrives to destination.

Author Closing Comment

ID: 39933861
Thanks for your feedback

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