Re: postfix relay

[Brian Candler <B.Candler at pobox.com>]

On Tue, Jul 16, 2002 at 11:45:07AM +0100, Brian Candler wrote:
> Or I think you could do something like this:
> 
>   require     condition = ${lookup{$sender_address}lsearch* at {/etc/senders}{1}{0}}
>               message = "Unauthorised envelope sender"
> 
> In which case /etc/senders can contain:
> 
> * at myisp.net
> fred at hotmail.com
> jim at hotmail.com
> 
> which is easier to read. Note that I have not actually tested any of these
> examples :-)

P.S. Exim's expression testing mode (-be) is very useful.

$ cat <<END >/tmp/test
* at myisp.net
fred at hotmail.com
jim at hotmail.com
END

$ exim -be '${lookup{noah at myisp.net}lsearch* at {/tmp/test}{1}{0}}'
1
$ exim -be '${lookup{fred at hotmail.com}lsearch* at {/tmp/test}{1}{0}}'
1
$ exim -be '${lookup{bob at hotmail.com}lsearch* at {/tmp/test}{1}{0}}'
0

Brian.

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