Using chrooted Postfix with procmail filter (see below) I get following
error message:

   sendmail: fatal: chdir /var/spool/postfix: Permission denied

I'd be very grateful if someone could please provide details for
technique I should employ to solve this and any similar problem(s) I
might encounter in future.

I have tried all sorts of permutations of uid alias tables, moving file
locations, searched newsgroups/faqs etc etc but am still overlooking the
(maybe obvious) solution.

In all other respects, the Postfix configuration for delivery of local
email and external pipes (to Mailman for example) work fine.

MORE INFORMATION:

Using chrooted Postfix 20010228 with RH6.2 and procmail-3.21.

I am trying to use a procmail sanitize filter to generate new email
using:

--snip--

 :0 h ci
    | ( \
        echo "To: $SECURITY_NOTIFY";\
        echo 'From: "Procmail Security daemon" <postmaster>';\
        echo 'Subject: SECURITY WARNING - possible email attack';\
        echo "X-Loop: EMAIL SECURITY WARNING $HOST $SECRET"; \
        echo ;\
        echo 'Trapped excessively long header:' ;\
        echo $HDR;\
        echo ;\
        echo $STATUS;\
        echo ;\
        echo 'Headers from message:';\
        echo ;\
        sed -e 's/^/> /' ;\
      ) | $SENDMAIL -U $SECURITY_NOTIFY

--snip--

My procmail.log amd maillog reveal:
   
NOTIFY RECIPIENT
sendmail: fatal: chdir /var/spool/postfix: Permission denied
sendmail: fatal: chdir /var/spool/postfix: Permission
denied

--snip--

Thanks,

Roger over and out.
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