On Tue, 9 Feb 1999, James FitzGibbon wrote:
> I have the following address rewriting configuration:
>
> *@cdb;ETCDIR/rewrite_domains.cdb
> ${lookup{$domain}cdb{ETCDIR/rewrite_domains.cdb}
> {${local_part}@$value}fail} Eh
> Yet I notice that during verification (and delivery) the comparison for
> the domain is case sensitive (or more specifically, the address is not
> lowercased prior to being looked up in the CDB file):
There is a logical problem here. The value of $domain is the actual
domain which appears in the address. It could of course be lower cased,
but I know that would cause some people unhappiness. In the early days
of Exim I made some changes in this regard, in order to preserve the
printing format of domains, because some people have mixed-case domain
names which look rather silly if the case is changed. Thus, one wants to
preserve the domain in rewrites such as
*@*.TheRap.com <something>@$domain
(not the best example) because "therap" doesn't look like two words. I
know it seems trivial, but it is important to some people - especially
if by some unfortunate accident the lowercased word is something
indecent.
You can, of course, trivally force lower casing by means of the ${lc:
operator (which I assume you know about).
You are right, though, in saying that this should be made clear in the
documentation. I have made a note to add this to the section on
rewriting replacements.
I think "matters of case" gets the award for the seemingly most trivial
thing which causes the most aggro in handling email.
--
Philip Hazel University of Cambridge Computing Service,
ph10@??? Cambridge, England. Phone: +44 1223 334714.
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