exim bug fix update

Updated exim packages that resolve an issue with deliveries on systems
configured with multiple routers and duplicate addresses are now available.

Exim is a message transfer agent (MTA) developed at the University of
Cambridge for use on Unix systems connected to the Internet. It is freely
available under the terms of the GNU General Public Licence. In style it is
similar to Smail 3, but its facilities are more general. There is a great
deal of flexibility in the way mail can be routed, and there are extensive
facilities for checking incoming mail. Exim can be installed in place of
sendmail, although the configuration of exim is quite different to that of
sendmail.

These updated exim packages provides fix for the following bug:

* when exim is configured to use multiple routers (eg a remote archiving
smtp router and the default localuser router) and duplicate addresses exist
(eg a list in /etc/aliases includes users also extant on the local system),
if any messages sent to a duplicated address are deferred (eg because the
user's mailbox is locked), these messages end up not being delivered. In
this circumstance, exim was correctly marking the address as a duplicate
but incorrectly marking it as "done". With this update, exim still checks
for duplicate addresses in these circumstances but now only marks unique
addresses as "done", ensuring deferred messages are still listed as
undelivered until they are, in fact, delivered. (BZ#609083)

All exim users of should upgrade to these updated packages, which resolve
this issue.

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

609083 - message delivery failure due to wrong check for duplicate addresses

exim