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The title already says much; I want to send mails with an adress ( ) Until we got our Exchange-Server, we were recieving via POP and sending via SMTP. The office (4 People) wants still to recieve and send with this E-Mail. The recieve is easy to solve with the POP-Connector that distributes the mails to the accounts, but how about sending? (All mails should go via Exchange-Server but with source adress:

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I'd also turf the POP accounts if you have the option (have control over's MX records) and send mail directly to Exchange. – gravyface Sep 12 '12 at 18:16
@gravyface The problem ist that the current mail address is known and thy don't want to change... – heysamhey Sep 12 '12 at 18:19
It doesn't have to change: instead of using POP3 protocol to pull your mail from a third-party into your mail server, reduce complexity by having the MX records point to Exchange (well, point to an A record that resolves to the IP address that Exchange is behind/using) and receive mail with SMTP, not just send it. – gravyface Sep 12 '12 at 18:23
up vote 4 down vote accepted

You will have to create a mailbox on the Exchange server with that address as the primary SMTP address. Then give the users SendAs privileges to that mailbox. When sending a message, they can pick this mailbox from the menu next to "From" on the new message.

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How can I add a mailbox with an adress that hasn't the ending @something.local ? – heysamhey Sep 12 '12 at 18:28
@heysamhey you need to make Exchange authoritative for your domain. I suggest you read up on Exchange fundamentals; there's quite a bit to running your own Exchange (mail) server; you might be better off with a hosted solution. – gravyface Sep 12 '12 at 18:30

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