On Thu, 2006-03-02 at 09:55 +0100, Ralf Ertzinger wrote:
The local part of mail addresses is, and has always been, case
sensitive.
Many mail systems ignore this, though (or can be configured to ignore it).
That's system-dependent. You can be case sensitive or not as you see
fit.
However, many systems out there are not case-preserving; you'll find
that addresses are sometimes converted to all-lowercase or
all-uppercase. So the norm nowadays is to be case-insensitive.
And as Chris correctly points out, it's mandatory to accept 'PoStmAster'
in any combination of upper/lower case.
--
dwmw2