[Exim] Directors config drivers

I'm running Exim v4 on Solaris v9.
I've copied the configure file from a Exim v3 system and I'm having
problems with the directors config "driver = aliasfile" or "driver =
redirect".
Has this been replaced/updated since Exim v3?

The full syntax I'm using is:
system_aliases:
driver = aliasfile (also tried driver = redirect)
file = /exim/aliasfile.cdb
search_type = cdb
file_transport = address_file
pipe_transport = address_pipe


The error is:
transport system_aliases: cannot find transport driver "aliasfile"

Would appreciate any guidance.
Thanks.


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Ken Jackson
Unix & Email Systems Administrator
North Campus Systems and Services
London Metropolitan University
London N7 8DB.

Email: K.Jackson@???

Tel: 0207-753-3163
Fax: 0207-753-

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