451 Error sending with Exim

[elenlace]

Hello,

I was wondering if someone knows how to solve the following problem when sending e-mails:

SMTP&& 451 rejected: temporarily unable to verify sender address (try again later)
SMTP&& 503 No sender yet given
SMTP&& 503 MAIL FROM command must precede DATA

I'm unable to send e-mail from any account.

Can anyone help?

Rgds,

elenlace

[rickyliu]

I have the same problem.

but I don't know how to solveit.