-- Am 03/11/13 10:52:03 +0000 schrieb Ian Eiloart:
On 8 Mar 2013, at 17:37, "Michael Fischer v. Mollard" <[email protected]>
wrote:
...
Hi,
thanks for the explanation. But it still feels like syntax, not
semantics ;-)
Michael
The point of the quotes is to permit stuff that would not normally be
permitted - like empty strings, "@" symbols, commas, and so on. Quite why
anyone would want to use an empty string as the local part is beyond me,
but then so are the rest of the examples.
as I don't need these strange local parts for my local domains I decided to
use a whitelist on the rcpt acl. In
<https://github.com/Exim/exim/blob/master/src/src/configure.default#L333>)
the following ACL is suggested:
deny message = Restricted characters in address
domains = +local_domains
local_parts = ^[.] : ^.*[@%!/|]
Using
local_parts = ^[.] : !^[A-Za-z0-9.+_-]+\$
is less surprising (given there are really no addresses with funny local
parts in local_domains) and more secure, especially if you feed your local
parts via SQL/LDAP to an external backend.
Michael
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