root@fe1:/var/log# aptitude install postfix
The following NEW packages will be installed:
  postfix{b}
The following packages will be REMOVED:
  apt-move{u} cfengine2{u} debconf-utils{u} dhcdbd{u} djvulibre-desktop{u} emacsen-common{u} fai-client{u} fai-doc{u}
  fai-server{u} finger{u} g++-4.3{u} ggzcore-bin{u} gnome-app-install{u} gnome-pilot{u} gnome-pilot-conduits{u} gnome-spell{u}
  gnome-utils{u} gnome-vfs-obexftp{u} gparted{u} gthumb{u} gthumb-data{u} hal{u} hal-info{u} hardinfo{u} libalut0{u}
  libamrnb3{u} libamrwb3{u} libapache2-mod-perl2{u} libapache2-reload-perl{u} libapm1{u} libapt-pkg-perl{u} libartsc0{u}
  libbeagle1{u} libbeecrypt6{u} libbind9-40{u} libbind9-50{u} libbsd-resource-perl{u} libconvert-asn1-perl{u} libcupsys2{u}
  libdate-manip-perl{u} libdb4.2{u} libdb4.5{u} libdirectfb-1.0-0{u} libdirectfb-extra{u} libdns45{u} libdns55{u}
  libdvdread3{u} libedata-cal1.2-6{u} libeel2-2.20{u} libeel2-data{u} libepc-1.0-1{u} libepc-ui-1.0-1{u} libevent1{u}
  libexchange-storage1.2-3{u} libfaac0{u} libfaad0{u} libfarsight0.1-3{u} libfreebob0{u} libgadu3{u} libgda3-3{u}
  libgda3-bin{u} libgda3-common{u} libgdl-1-common{u} libggi-target-x{u} libggi2{u} libggz2{u} libggzcore9{u} libggzmod4{u}
  libgii1{u} libgii1-target-x{u} libgksu1.2-0{u} libgksuui1.0-1{u} libglew1.5{u} libgmime-2.0-2a{u} libgmime2.2-cil{u}
  libgmyth0{u} libgnome-pilot2{u} libgnome2.0-cil{u} libgnomevfs2-bin{u} libgoffice-0-6{u} libgoffice-0-6-common{u} libgpod3{u}
  libgtkhtml2-0{u} libgucharmap6{u} libhesiod0{u} libicu38{u} libimlib2{u} libio-compress-base-perl{u}
  libio-compress-zlib-perl{u} libio-multiplex-perl{u} libisc45{u} libisc52{u} libisccc40{u} libisccc50{u} libisccfg40{u}
  libisccfg50{u} libiw29{u} libjinglebase0.3-0{u} libjinglep2p0.3-0{u} libjinglexmllite0.3-0{u} libjinglexmpp0.3-0{u}
  libkpathsea4{u} libltdl3{u} libltdl3-dev{u} liblwres40{u} liblwres50{u} libmeanwhile1{u} libmime-base64-urlsafe-perl{u}
  libmissioncontrol-client0{u} libmissioncontrol-server1{u} libmono-cairo1.0-cil{u} libmono-data-tds1.0-cil{u}
  libmono-i18n1.0-cil{u} libmono-i18n2.0-cil{u} libmono-security1.0-cil{u} libmono-sharpzip0.84-cil{u}
  libmono-system-data1.0-cil{u} libmono-system-web1.0-cil{u} libmono-system1.0-cil{u} libmono0{u} libmono1.0-cil{u}
  libmozjs1d{u} libmp3lame0{u} libmpcdec3{u} libmpfr1ldbl{u} libmtp7{u} libnautilus-burn4{u} libneon27{u} libnet-cidr-perl{u}
  libnet-ldap-perl{u} libnet-server-perl{u} libnetfilter-conntrack1{u} libnm-glib0{u} libnm-util0{u} libopal-2.2{u} libosp5{u}
  libparted1.8-10{u} libphp-adodb{u} libpisock9{u} libpisync1{u} libpkcs11-helper1{u} libpoppler-glib3{u} libpt-1.10.10{u}
  libpt-1.10.10-plugins-alsa{u} libpt-1.10.10-plugins-v4l{u} libradius1{u} librrds-perl{u} libsctp1{u} libsensors3{u}
  libsexy2{u} libsgutils1{u} libsoup2.2-8{u} libsplashy1{u} libstdc++6-4.3-dev{u} libswfdec-0.6-90{u} libtalloc1{u}
  libtelepathy2{u} libtotem-plparser10{u} libtrackerclient0{u} libwxbase2.6-0{u} libwxgtk2.6-0{u} libx264-65{u}
  libxklavier12{u} libxvidcore4{u} libzephyr3{u} lksctp-tools{u} lzop{u} mplayer-skin-blue{u} nagios3-doc{u} ncompress{u}
  network-manager-openvpn{u} network-manager-openvpn-gnome{u} network-manager-vpnc{u} network-manager-vpnc-gnome{u}
  openssl-blacklist{u} openvpn{u} openvpn-blacklist{u} planner{u} python-4suite-doc{u} python-4suite-xml{u} python-cupsutils{u}
  python-eggtrayicon{u} python-fpconst{u} python-gtkmozembed{u} python-pyopenssl{u} python-soappy{u} radiusclient1{u}
  rss-glx{u} sg3-utils{u} svgalibg1{u} swfdec-gnome{u} syslinux-common{u} telepathy-stream-engine{u} totem-gstreamer{u}
  tsclient{u} unace{u} uswsusp{u} vpnc{u} w3c-dtd-xhtml{u} wodim{u} xsane{u} xsane-common{u}
0 packages upgraded, 1 newly installed, 202 to remove and 11 not upgraded.
Need to get 1,402 kB of archives. After unpacking 260 MB will be freed.
The following packages have unmet dependencies:
  postfix: Conflicts: mail-transport-agent which is a virtual package.
  exim4-daemon-light: Conflicts: mail-transport-agent which is a virtual package.
  exim4-config: Conflicts: postfix but 2.7.1-1+squeeze1 is to be installed.
The following actions will resolve these dependencies:

     Remove the following packages:
1)     exim4
2)     exim4-base
3)     exim4-config
4)     exim4-daemon-light



Accept this solution? [Y/n/q/?] n