On Sun, 16 Sep 2001, Todd Jagger wrote:
> One of our router directives sends incoming mail to a non-Exim host for
> delivery into the end users' mailboxes. We've been having a lot of
> problems lately with dictionary attacks and, if possible, I would like
> our Exim mail-hub to be able to send the 550 rejection rather than
> deliver the message on to the remote host.
Why doesn't the remote host reject it if it's an unknown user?
> It doesn't appear this is a
> function of the receiver_verify in global configuration nor the
> verify_recipient directive in the router. Or if it is I've not set
> something up properly.
For remote domains, receiver_verify just verifies the domain in Exim 3.
> Is it possible for Exim to query the remote host for an existing
> account before the router sends it to the host, and if so which would
> be the best way to do so?
Exim 4 will be able to do this.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
