[EXIM] filter problem

This rule in my system filter is now causing errors:

elif "$lookup {$sender_host_address} lsearch
{/local/mail/block/sender-host-reject}\
{found}{notfound}}" is "found" then fail text "Mail undeliverable"

(the first two lines are actually one line in the filter).

The error is:

1999-02-19 22:23:00 10Deb6-0008CH-00 Error in message_filter file: failed to
expand "$lookup {$sender_host_address} lsearch
{/local/mail/block/sender-host-reject}{found}{notfound}}" in filter file:
unknown variable: lookup

Why was it not complaining before and only now causes problems?

thanks

--
Andrew



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