I have my Sophos UTM running at my home office. It is handeling my email at the moment, this is working fine.
No i would also like to handeling the emails from my clients before the emails reach their Exchange servers.
So i changed their MX records to my IP address.
I have created SMTP Profiles per client.
Under "Routing" i chose "DNS hostname" under Route by. I entered remote.CLIENTNAME.nl here.
I have checked the email with the Exchange Connectivity site, but i am getting error:
|
The server returned status code 550 - Mailbox unavailable. The server response was: Relay not permitted
Exception details: Message: Mailbox unavailable. The server response was: Relay not permitted Type: System.Net.Mail.SmtpFailedRecipientException |
So i assume i have to enter the clients IP under "Relaying". i am right?
But which one? Upstream/Authenticated or Host-Based Relay?
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