I need help on reinstalling qmail.

I tried
"yum remove mailman"
"yum remove psa-qmail" and then it says
I will do the following:
[erase: psa-qmail 1.03-fc2.build75050824.12.i586]
I will erase these to satisfy the dependencies:
[deps: psa-agent 1.3.5-75050930.11.noarch]
[deps: DocFAQ 1.71-7508.noarch]
[deps: phpWiki 1.3.11-7508.noarch]
[deps: psa-turba 2.0.3-fc2.build75050926.17.noarch]
[deps: AutoIndex 1.5.3-7507.noarch]
[deps: SSHTerm 0.2.2-fc2.build75050824.12.noarch]
[deps: psa-fileserver 1.0.0-fc2.build75050824.12.i586]
[deps: CSLH 2.12.2-7504.noarch]
[deps: psa-spamassassin 7.5.4-fc2.build75050927.15.i586]
[deps: xrms 1.19-7504.noarch]
[deps: bbclone 0.48-7508.noarch]
[deps: psa-api-rpc 7.5.4-fc2.build75050930.11.noarch]
[deps: phpsurveyor 0.98-7510.noarch]
[deps: psa-migration-manager 7.5.4-fc2.build75050930.11.i586]
[deps: psa-hotfix3 7.5.4-fc2.build75051115.01.i586]
[deps: psa-hotfix2 7.5.4-fc2.build75051014.16.i586]
[deps: phpMoney 1.3-7510.noarch]
[deps: phpBugTracker 1.19-7506.noarch]
[deps: psa-api-common 7.5.4-fc2.build75051014.16.noarch]
[deps: psa-hotfix 7.5.4-fc2.build75050926.17.i586]
[deps: psa-mnemo 2.0.1-fc2.build75050824.12.noarch]
[deps: Mambo 4.5.2-7505.noarch]
[deps: PostNuke 0.750-7505.noarch]
[deps: psa-manual-custom-skin-guide 7.5.4-fc2.build75050824.12.noarch]
[deps: psa-firewall 1.0.1-fc2.build75050824.12.i586]
[deps: typo 3.8.0-7505.noarch]
[deps: frontpage 5.0-72psa.fc2.i586]
[deps: phpBook 1.50-7507.noarch]
[deps: phpBB 2.0.17-7508.noarch]
[deps: psa-ingo 1.0.1-fc2.build75050824.12.noarch]
[deps: psa-horde 3.0.5-fc2.build75050824.12.noarch]
[deps: psa-bu 7.5.4-fc2.build75050926.17.i586]
[deps: pLog 1.0-7508.noarch]
[deps: TUTOS 1.88-7504.noarch]
[deps: Tellme 1.2-7507.noarch]
[deps: Coppermine 1.3.3-7515.noarch]
[deps: phpAds 2.0.5-7506.noarch]
[deps: mod_webapp 4.1.29-41psa.fc2.i586]
[deps: PPWSE 1.1-fc2.build75050824.12.i586]
[deps: osCommerce 2.2ms2-7509.noarch]
[deps: WebCalendar 1.0-7504.noarch]
[deps: psa-api-cli 7.5.4-fc2.build75051014.16.noarch]
[deps: psa-courier-imap-add 7.5.4-fc2.build75050902.17.i586]
[deps: WebShopmanager 2.0-7506.noarch]
[deps: psa-kronolith 2.0.3-fc2.build75050824.12.noarch]
[deps: UebiMiau 2.7.8-7508.noarch]
[deps: phpDig 1.85-7505.noarch]
[deps: psa-qmail-rblsmtpd 0.70-fc2.build75050824.12.i586]
[deps: psa-tomcat-configurator 7.5.4-fc2.build75050824.12.noarch]
[deps: openbiblio 0.5-7513.noarch]
[deps: phpMyFamily 1.4.1-7508.noarch]
[deps: psa 7.5.4-fc2.build75050824.12.i586]
[deps: b2evolution 0.9.0.12-7505.noarch]
[deps: gallery 2.0-7516.noarch]
[deps: gtchat 0.93-7507.noarch]
[deps: Owl 0.80-7507.noarch]
[deps: WordPress 1.5.1-7509.noarch]
[deps: AdvancedPoll 2.03-7505.noarch]
[deps: psa-imp 4.0.3-fc2.build75050824.12.noarch]
[deps: psa-passwd 3.0-fc2.build75050824.12.noarch]
[deps: psa-watchdog 1.0.0-fc2.build75050926.17.i586]


So I don't want to remove all these dependancies. I just want to remove Qmail so I can re-install it.

I'm a beginner to linux, so any help would be appreciated.

 

I am assuming you at least know how to SSH into the server since you are able to use yum.

You find the psa-qmail rpm file on your server, generally like in /root/psa/PSA_7.5.4/rpm_fc2/base

Instead of using yum remove, you can use the rpm command.

You may want to force a re-install without uninstalling qmail first, change dir to where the rpm file is, then:

rpm -Uvh --force name_of_rpm

If that does not work, then you can uninstall just the rpm package (not the dependencies like yum does) with:

rpm -e name_of_rpm

then do the re-install without the --force option.

 

I got Qmail working, but it doesn't work on port 25. I switched smtp to port 24 to get it to work.

So I don't know how to fix this problem? How do I get it to work on port 25?