On 4/15/2013 8:24 AM, Jan P. Kessler wrote:
Hi,
sorry, I know this is not directly related to postfix but I know that
there are several very experienced people reading this list. My question
is how you (the people that use and administer mailservers) handle the
localpart case sensivity according to rfc5321:
"The local-part of a mailbox MUST BE treated as case sensitive."
You are misunderstanding. Relaying MTAs MUST treat the local-part as
case sensitive. IOW, until the message is received at the destination,
case must be preserved. However, the RFC does NOT require any
organization to treat their local addresses as case sensitive. It would
be pointless anyway as you could just say all the variations of case are
aliases.