Stefan Klatt wrote:

> Hello,
> 
> if i use exim 4.62 with maildir and local_part_suffixes. exim use only
> lowercase directories even i use local_part_suffixes with uppercase
> letters.
> Is there a way to control this behavior?
>  
> 
> Mit freundlichen Grüßen,
> 
> Stefan Klatt

See 'caseful_local_part = true'

As in:

shell_user:
   driver = accept
   caseful_local_part = true
   check_local_user
   transport = shell_delivery
   cannot_route_message = Not one of our clients.

It is not available in every possible situation (nor should it be), but does 
work in router/transport sets, which is where you specify needing it.

In the illustration above, our shell accounts (typically three only) rely on 
mixed-case, and no 'folded' versions would ever be acceptable.

For the wider world of corespondents, be aware that insisting on 
case-senstivity 
can add more grief than gain.  local_parts are *supposed to be* at least 
preserved and conveyed unaltered, if not treated distinctly, but typo's aside, 
not all MTA will do so.

HTH,

Bill


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