Using Exchange 2003 SP2, mostly doing good, but there are cases when getting NDR:
"Unable to relay"
"No unauthenticated relaying permitted"
"Relaying denied. Proper authentication required".
All recipients claim that they get e-mails from others just...
I have one Outlook 2003 SP3 client with Exchange 2003 SP2 account that gets blank embedded e-mail items, while others can see these embedded e-mails and attachments in them just fine. I cannot find any difference in Outlook settings and Exchange mailbox settings between this one user...