Hi, I wonder if someone can give us some guidance. I hope this makes sense.
In exchange 2010 console, under organization configuration > hub transport > accepted domains, we have :
abc.co.uk - authoritative (default true)
def.london - authoritative (default false)
abc.co.uk is our AD domain and we have no issue with this. def.london is a new accepted domain which has an MX record pointing to our external exchange IP.
In order to send and receive emails from firstname.lastname@example.org, we did the following :
created a new AD OU New Division in abc.co.uk
created a new mailbox email@example.com with the SMTP address of firstname.lastname@example.org
In exchange console, under organization configuration > hub transport > e-mail address policies, we have :
New Policy - priority 1(applied) – for recipient container abc.co.uk/New Division
Default Policy - priority Lowest (applied)
We can successfully send and receive emails from/to email@example.com and they appear to come from firstname.lastname@example.org. Great.
We now need email@example.com to be able to send and receive emails for firstname.lastname@example.org, and have granted email@example.com full access rights and send as permission to firstname.lastname@example.org.
Unfortunately, every time we attempt to send an email in Outlook 2010 using email@example.com in the From field, we get :
"You can't send a message on behalf of this user unless you have permission to do so …."
Interestingly, if we change the primary SMTP address on firstname.lastname@example.org to email@example.com, we can send as with firstname.lastname@example.org.
Have we missed a step, or is this simply not possible using a primary SMTP address from the accepted domain?