Which yum repositories are you using? Show us output of command "yum repolist" please.
iRedMail has a small yum repository, but most packages are installed from EPEL repo.
thanks
# yum repolist
Loaded plugins: fastestmirror, priorities
Loading mirror speeds from cached hostfile
repo id repo name status
base CentOS-6 - Base 6,367
epel Extra Packages for Enterprise Linux 6 - x86_64 10,136
extras CentOS-6 - Extras 13
iRedMail iRedMail 73
updates CentOS-6 - Updates 225
repolist: 16,814
until few days, it also had rpmforge enabled, BUT, I saw error in 'yum update'
tested disabling epel, still was getting some error messages;
tested disabling rpmforge, NOT getting error messages;
so, disabled rpmforge
trawling through repos and yum log I see:
# yum list available | grep clamd
clamd.i686 0.97.7-1.el6.rf iRedMail
claws-mail-plugins-clamd.x86_64 3.9.0-2.el6 epel
[root@emu log]# yum --disablerepo="*" --enablerepo="rpmforge" list available | grep clamd
clamd.x86_64 0.98-2.el6.rf rpmforge
# grep clam yum*
yum.log:Nov 05 17:41:11 Installed: clamav-db-0.98-1.el6.x86_64
yum.log:Nov 05 17:41:12 Installed: clamav-0.98-1.el6.x86_64
yum.log:Nov 05 17:41:13 Installed: clamd-0.98-1.el6.x86_64
yum.log:Dec 15 14:41:34 Updated: clamav-db-0.98-2.el6.x86_64
yum.log:Dec 15 14:41:36 Updated: clamav-0.98-2.el6.x86_64
yum.log:Dec 15 14:41:36 Updated: clamd-0.98-2.el6.x86_64
it seems (?) my system updated clamd from rpmforge, and, that might have broken amavis...?
what's best path forward ? unistall clam, install clam from iRedMail repo?
thanks again