Thank you for your response, Diane.
Well, they appear to be random when NDR appears for the first time, but then we get NDRs for these addresses all the time, for example:
"503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check...
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...
Yes, he has the same issue with every sender.
I read about Google desktop too, but that is not the case. He has this issue on every computer, even terminal server, and even if his Inbox is open by Administrator through File\Open\Other User's Folder.
I cannot imagine it happens because of...
I go to Insert Item while composing new message in order to attach an e-mail item from my Inbox and doing that creates an embedded attachment. Maybe it is wrong to call it embedded, I am not sure.
I read about similar cases when recipient is in the Contacts or Global Address Book of the...
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...