I have problem to configure my relay restrictions correct.
We are using our Exchange 2000 server with both IMAP4 (Outlook) and POP 3
clients. I want to set up relay restrictions so all people who successfully
authenticate can relay emails. I have try different configurations, but none
It's working if the client use Outlook with MAPI4, but if they change to
Outlook Express (for example) and using POP3, they can't relay emails to
Under "Default SMTP Virtual Server Properties", "Access" tab, "Relay" I
check the radio button who says "Only the list below", and check the
checkbox "Allow all computers which successfully authenticate to relay,
regardless of the list above".
But I get the following error message in Outlook Express when I try to send
Server error: 550, Error number: 0X800CCC79