Hello, I installed Ubuntu 8.04 using the howto forge perfect server tutorial. I also installed request tracker 3.6 using apt-get. It installed fine but it ended up installing exim. Now when I try to install postfix, it gives me the following: Code: root@it:/# apt-get install postfix libsasl2-2 sasl2-bin libsasl2-modules procmail Reading package lists... Done Building dependency tree Reading state information... Done libsasl2-2 is already the newest version. libsasl2-modules is already the newest version. The following extra packages will be installed: db4.6-util Suggested packages: mail-reader postfix-cdb postfix-ldap postfix-mysql postfix-pcre postfix-pgsql resolvconf The following packages will be REMOVED: exim4-base exim4-config exim4-daemon-light The following NEW packages will be installed: db4.6-util postfix procmail sasl2-bin 0 upgraded, 4 newly installed, 3 to remove and 0 not upgraded. Need to get 0B/1556kB of archives. After this operation, 201kB of additional disk space will be used. Do you want to continue [Y/n]? Y Preconfiguring packages ... dpkg: exim4-base: dependency problems, but removing anyway as you request: exim4-daemon-light depends on exim4-base (>= 4.69). (Reading database ... 26826 files and directories currently installed.) Removing exim4-base ... * Stopping MTA [ OK ] Removing exim4-config ... dpkg: exim4-daemon-light: dependency problems, but removing anyway as you request: rt3.6-clients depends on exim4 | mail-transport-agent; however: Package exim4 is not installed. Package mail-transport-agent is not installed. Package exim4-daemon-light which provides mail-transport-agent is to be removed. request-tracker3.6 depends on exim4 | mail-transport-agent; however: Package exim4 is not installed. Package mail-transport-agent is not installed. Package exim4-daemon-light which provides mail-transport-agent is to be removed. Removing exim4-daemon-light ... * Stopping MTA /sbin/start-stop-daemon: warning: failed to kill 4318: No such process invoke-rc.d: initscript exim4, action "stop" failed. dpkg: error processing exim4-daemon-light (--remove): subprocess pre-removal script returned error exit status 3 Errors were encountered while processing: exim4-daemon-light E: Sub-process /usr/bin/dpkg returned an error code (1) It seems as if exim is listed as a dependency for request tracker. Is there a way I can remove it as a dependency so I can uninstall it and replace it with postfix?