acl_smtp_data condition

I would much appreciate some advice in what I am doing wrong.

There is something I am not understanding in the "condition if match" 
syntax.

I want to compare the From: content against a list of email address 
which I store in a flat text file named me.senders

Here is my condition:
  condition = ${if match {${address:$header_From}} 
{lsearch;ETCDIR/me.senders}}

here is the logged error message:
  temporarily rejected after DATA: failed to expand ACL string
  "${if match {${address:$header_From}} 
{lsearch;/u/exim/etc/me.senders}}": missing 2nd string in {} after "match"

does the "second string" refer to the lsearch; ?


-- 
Jim Pazarena         [email protected]
Nanaimo - British Columbia - Canada


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