[Exim] rewriting rules and lsearch lookups

Hi All,

I currently have a series of rewriting rules written directly into exim's
configuration file. I would like to farm these out to a (series) of text
files.

The first type of rewriting rule catches individual users at some domain and
rewrites it. There will also usually be a catch all rewriting rule.
work@???                 simon@???             Tbc
*@domain1.com                        simon@???            Tbc

The second type of rewriting is just a direct domain substitution. ie.

*@domain2                            $1@???            Tbc

Thanks in advance,

Kind regards,

Paul