Quoting "j.linn" <sys044@???>:
> Exim 4.10
>
> The alias file had as a test alias :-
> j.linn: :fail: norcol.ac.uk is no longer in use. Use j.linn@??? > Which looks like the message is not sent on the 550 but just logged.
> This was
> confirmed by looking at the SMTP transfer.
>
> SMTP: "550 unknown user\r\n" > What am I missing?
You probably have a 'message = unknown user' acl command that has priority
over the :fail: message. There is a $acl_verify_message variable that
should contain the message from :fail: that you could use in your message
command.