Problem in receiving mail

rpm -qa | grep ^nethserver-
nethserver-hosts-1.1.3-1.7.gd479a70.ns7.noarch
nethserver-firewall-base-2.10.2-1.12.g0a45b0d.ns7.noarch
nethserver-antivirus-1.1.5-1.12.gc84dd84.ns7.noarch
nethserver-httpd-admin-1.6.2-1.20.g81b901e.ns7.noarch
nethserver-phonehome-1.1.2-1.3.gc8fad66.ns7.noarch
nethserver-yum-1.3.5-1.ns7.noarch
nethserver-php-1.1.2-1.5.g0f0772e.ns7.noarch
nethserver-lang-en-1.0.18-1.ns7.noarch
nethserver-samba-1.5.4-1.10.g8c89699.ns7.noarch
nethserver-smartd-1.0.1-1.2.gcfeb212.ns7.noarch
nethserver-lib-2.1.5-1.4.gb88ffcd.ns7.noarch
nethserver-dnsmasq-1.5.6-1.8.g590a8bb.ns7.noarch
nethserver-unbound-1.0.0-1.3.gcf0764a.ns7.noarch
nethserver-mail-common-1.5.3-1.6.g69695ec.ns7.noarch
nethserver-mail-filter-1.3.5-1.11.ga4d581d.ns7.noarch
nethserver-httpd-2.5.1-1.10.g1c27027.ns7.noarch
nethserver-ntp-1.0.9-1.7.g35e8125.ns7.noarch
nethserver-lsm-1.1.1-1.7.g33cdb32.ns7.noarch
nethserver-release-7-0.1.16.g5b46360.ns7.noarch
nethserver-mail-server-1.9.1-1.7.gea1ded5.ns7.noarch
nethserver-openssh-1.1.1-1.4.g26269ad.ns7.noarch
nethserver-base-2.9.5-1.53.gd06450a.ns7.noarch
nethserver-directory-2.3.0-1.19.g74acb24.ns7.noarch
nethserver-duc-1.3.3-1.7.g3980738.ns7.noarch