[EXIM] Exim and the debug_print Option

To who may be able to help...

I am now running exim 2.12 on my SunOS 4.1 box quit happily.
After trying to get the latest sendmail version to run with some
goodies (multi-domains and some local stuff) I simply gave up and
changed to exim. I am realy happy with it, its much nicer to configure
and more clearer in layout to me. To me only 2 days. Simply put: I LIKE IT !

But of course I do face some problems.

I want to achieve the following:

When a local user sends mail to the local address "A<name>" (wich <name>
been anything) the file "<name>" should be created below his home-directory
in the the form "$HOME/mymail/<name>"

I set up the director:

ablage:
driver = smartuser
transport = local_ablage
prefix = "A"

and the transport:

local_ablage:
driver = appendfile
file = ??how-to-get-the-home-Dir-here?? /mymail/${local_part}
user = $sender_ident
debug_print = file

Now my problems:
1.) how do I get the homedirectory for the user $sender_ident?
2.) "prefix" makes NO difference between "A" and "a". I ONLY want
    capital A's to use this transport
3.) When testing with "exim -d10 -bt" the debug_print option
    seems NOT to work at all. How to check to what string "file"
    expands ??
    If I put a debug_print into the director section, it just prints
    the string "file" insted of to what "file" expands to. What's that ??

Any tip how I could go on to get my problem done ??

-ernst czaputa, frankfurt (germany)


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