[exim] ${prvs } is case sensitive

# exim4 -be
> ${prvs{spamtrap@???}{1234567890}}
prvs=0573e4a6c2=spamtrap@???
> ${prvs{SPAMTRAP@???}{1234567890}}
prvs=05735d5c15=SPAMTRAP@???
>

I noticed this the other day, meaning that any local part for checking should
be treated in a case sensitive manner OR you could lowercase the return path
before transmission instead.

--

Regards,

Martin Nicholas.

E-mail: reply-2009@???