I was not able to deliver your mail - authentication required

[cristian]

Hello,

All emails sent to a dedicated server with DA are rejected with this message.


I am deeply sorry, but I was not able to deliver your mail to the following addresses:
: authentication required
This is a permanent delivery failure. The delivery has been tried 0 times and will not be rescheduled again.


Can you guys help me ? is urgent.

i tried to install exim again , i rewritten config i have the same problem.


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I fixed the problem rebuilding /etc/virtual.
http://help.directadmin.com/item.php?id=66