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Chapter 1. Package Updates
1.51. exim
1.51.1. RHBA-2009:1627: bug fix update
Note
This update has already been released (prior to the GA of this release) as FASTRACK
RHBA-2009:1627
errata
Updated exim packages that resolve several issues 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 provide fixes for the following bugs:
* The exim init script would return with error code 0 regardless of if the service had actually been
started. An incorrect return code would be issued concerning the exim init script because of
an unimplemented feature of the script. These bugs concerning the exim init script have been
corrected by modifying it to return a value of 2 on an unsupported command, a return of 1 when the
$NETWORKING parameter is set to no, returning the correct status error to the user and forcing the
script to restart (using condrestart) when the status is not equal to 0.
* The default configuration referred to an undefined domain list causing errors when trying to relay
email. The correct domain list of relay_to_domains is now utilized.
* Exim listened on all interfaces by default, whereas Sendmail and Postfix only listen on loopback
by default. Administrators who would assume exim had default settings configured the same as
Sendmail and Postfix may have introduced a security hole when installing exim. To correct this the
code segment local_interfaces = <; 127.0.0.1 ; ::1; has been added to the default configuration;
allowing Administrators to treat exim default settings the same as Sendmail and Postfix.
* Exim used to attempt generation of the certificate on installation instead of the first start, which could
cause the installation to fail when the certificate could not be generated. Certificate generation is now
undertaken upon the first start of exim after installation, allowing the installation to succeed.
All users of exim are advised to upgrade to these updated packages, which resolve these issues.
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