[EXIM] External address validation

Hi

I'm using an external database to validate incoming email addresses. I
currently do it in sendmail like this:

Mmymailer,     P=/usr/local/bin/procmail, F=lsDFMA5:/|@qSnE9, S=10/30,
R=20/40,
                T=DNS/RFC822/X-Unix,
                A=procmail -t -f $g -m MYUSER=$u@$h /etc/procmailrc $h $g $u

.. with a system-wide procmail recipe which calls another program which then
validates the address using Oracle etc etc. I can do this easily becase I
have the envelope address in the MYUSER variable.

I'm pretty new to exim and I'm very impressed, particularly with its address
re-writing capabilities, but I can't work out how to do this & I'm in a bit
of a hurry. Any pointers in the right direction would be much appreciated.


Cheers

Al


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