The SRPM patch dovecot-1.1-default-settings.patch changes the default interface list from "*" to "[::]" which causes dovecot to listen only on all IPv6 interfaces instead of on all IPv4 interfaces. The comments in the configuration file suggest using "*, [::]" to listen to both. What is the desired policy? I was expecting at least IPv4 service to work without customization. (I'm upgrading a CentOS 5 system.)
triaged
The default "listen" setting is consistent with this setting in the 1.0.x series in F-9 and earlier. It used the "[::] listens in on all IPv6 intefaces, but may also listen on all IPV4 interfaces depending on the OS" clause. So now I need to check what has changed, whether the listen code in dovecot 1.1 (vs, the 1.0.x) or newer glibc is the cause or ...
default settings are updated, koji build at http://koji.fedoraproject.org/koji/buildinfo?buildID=53954
Dovecot changeset that resulted in the issue: http://hg.dovecot.org/dovecot-1.1/rev/da971cec0395 Discussion thread on Dovecot mailing list: http://dovecot.org/list/dovecot/2008-June/031733.html