Ralph Blach wrote:
CASE FOLDING
All delivery decisions are made using the bare recipient
name (i.e. the address localpart), folded to lower case.
http://www.postfix.org/local.8.html
Thanks, I discovered this and I personally consider this a bug. In
these days, users names need to be mixed case for security reasons.
If I have a domain name I could just run through a list of well known
names, and then fill it up with mail.
It's not so much a bug as a direct violation of the SMTP spec. RFC2821,
par. 2.4, states:
The local-part of a mailbox MUST BE treated as case sensitive. Therefore, SMTP
implementations
MUST take care to preserve the case of mailbox local-parts. ... In particular,
for some hosts the
user "smith" is different from the user "Smith"."
Of course the the spec. goes on to say "However, exploiting
the case sensitivity of mailbox local-parts impedes interoperability
and is discouraged."
I'm actually a bit surprised to discover this. Postfix is generally pretty
good about spec. compliance.
Miles Fidelman
--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
