Hi,
I'd like to implement disposable addresses of the form:
user-<randompart>@mydomain
That's easy. What's a little less easy is the blacklist to discard ones
no longer wanted.
I figure I can have a redirect router with a :blackhole: option or an
"acl_smtp_rcpt deny", either checking a list with lookup{}
The redirect router is less desireable as I have to handle mail I no
longer want instead of being able to reject it at SMPT time (whereby the
spammer who now has it might stop bothering me).
The ACL works with a central blacklist quite nicely:
acl_smtp_rcpt
=================
...
deny condition = ${if exists{/etc/exim4/mail-blacklist}}
condition =
${lookup{${local_part}@${domain}}lsearch{/etc/exim4/mail-blacklist}{true}{false}}
message = unknown user
...
=================
The redirect router is this:
==============================
wildcard_usernames:
driver = redirect
domains = +local_domains
local_part_suffix = -*
local_part_suffix_optional
condition = ${if def:local_part_suffix}
data = $local_part@$domain
==============================
But it *would be cute* to have a per user blacklist, in their home dir.
So - is there any way to do a "lookahead" and apply an ACL similar to
above knowing both the original Envelope-To *and* the final $local_part
(ie the system username) after the redirects that strips the throwaway
suffix -* above ?
I might be missing a totally different approach to achieving the same
thing of course - so any opinions welcome :)
Many thanks!
Tim
--
Tim Watts
Personal Blog:
http://www.dionic.net/tim/
