Exchange 2007 allow relay
I ran into an issue where I was unable to send email to external clients from my Xerox Workcentre 7435 Multifuction Printer. This machine was used to basically scan documents, create a PDF, then email to a recipient. I was able to do this to internal addresses no problem, but the moment we tried to put in an external address, we were not successful.
The reason for this is because in Exchange 2007, open relay is disabled by default. What I had to do was under receive connectors, create a new connector, specify the IP of the device, then on the authentication tab select externally secured. Under permission groups tab, I selected Exchange servers.
Immediately it was solved.
More researched showed that the default permissions for externally secured option are:
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Accept-Authoritative-Domain}
MS Exchange\Externally Secured Servers {ms-Exch-Bypass-Anti-Spam}
MS Exchange\Externally Secured Servers {ms-Exch-Bypass-Message-Size-Limit}
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Accept-Exch50}
MS Exchange\Externally Secured Servers {ms-Exch-Accept-Headers-Routing}
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Submit}
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Accept-Any-Recipient}
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Accept-Authentication-Flag}
MS Exchange\Externally Secured Servers {ms-Exch-SMTP-Accept-Any-Sender}
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