Philip,
Thanks for the help. The following rewrite rule works perfectly:-
*@* ${lookup{$local_part}lsearch{/usr/local/exim/tables/\
${lookup{$domain}partial-lsearch{/usr/local/exim/tables/rewrite_domains}{$value}
}-aliases}\
{$value}fail}@??? Ffrs
Regards
Steve.
>On Fri, 18 Dec 1998, Steve Sargent wrote:
>
>> I want to look the domain up in a file of domain names and use the returned
>> value as a part of the file name for the second lookup.
>>
>> The rewrite rule is:-
>>
>> *@lsearch;/usr/local/exim/tables/rewrite_domains \
>> ${lookup{$local_part}lsearch{/usr/local/exim/tables/$value-aliases}\
>> {$value}fail}@??? Ffrs
>
>This doesn't make sense. The variable $value is the result of a lookup.
>Therefore, you cannot make use of it as part of the name of the file in
>which you are going to look it up. Surely what you want is
>
>*@lsearch;/usr/local/exim/tables/rewrite_domains \
> ${lookup{$local_part}lsearch{/usr/local/exim/tables/$domain-aliases}\
> {$value}fail}@??? Ffrs
>
>> rewrite_domains contains:-
>>
>> qmwcc8.qmw.ac.uk:compserv
>>
>> compserv-aliases contains:-
>>
>> cgaa392:B.Harding
>
>Oh, I see, it isn't as simple as that. Well, in that case, you have to
>replace $domain above with
>
>${lookup{$domain}lsearch{/usr/local/exim/tables/rewrite_domains}{$value}}
>
>This will be quite efficient, since Exim caches lookups.
>
>--
>Philip Hazel University of Cambridge Computing Service,
>ph10@??? Cambridge, England. Phone: +44 1223 334714.
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