Upgrading 7.5.4 to 8.0 Failed, qmail doesn't work now.

[drweird13]

I'm having pretty much the same problem as:
http://forum.swsoft.com/showthread.php?threadid=32158&perpage=15&pagenumber=1

It all started when I tried going to Server > Updater > Plesk 8.0 > Select all > Install. I set it to send me an e-mail, but never did. Looked in log files, and a lot of errors were showing(/tmp/autoinstaller3.log). I figured it never actually installed, since my Plesk login still says 7.5.4.

Today I just found out the mail system does not work at all. I've tried logging in/sending mail through webmail, SMTP, and command line. None of them work, and shows the error message in (/usr/local/psa/var/log/maillog):

imapd: IMAP connect from @ [127.0.0.1]Error: HTTPD_INCLUDE_D not defined

When I do a "rpm -qa | grep psa" I get this:

psacct-6.3.2-31
psa-manual-custom-skin-guide-7.5.4-fc3.build75050824.12
perl-FreezeThaw-0.43-61psa
psa-autoinstaller-3.0.0-build060321.19
psa-kronolith-2.1-fc3.build75060412.17
psa-passwd-3.0-fc3.build75060412.17
psa-api-common-7.5.4-fc3.build75060321.20
psa-horde-3.1.1-fc3.build75060413.11
psa-api-cli-7.5.4-fc3.build75060321.20
psa-php4-configurator-1.0.0-fc3.build80060331.13
psa-proftpd-xinetd-1.2.10-fc3.build80060331.13
drweb-4.32.2-rh7_psa
psa-sbm2-1.0-49
psa-bu-7.5.4-fc3.build75060321.20
psa-migration-manager-7.5.4-fc3.build75060321.20
psa-turba-2.1-fc3.build75060412.17
psa-mnemo-2.1-fc3.build75060412.17
psa-watchdog-1.0.0-fc3.build75060321.20
psa-api-rpc-doc-7.5.4-fc3.build75060321.20
psa-api-rpc-7.5.4-fc3.build75060321.20
psa-hotfix5-7.5.4-fc3.build75060118.18
psa-hotfix7-7.5.4-fc3.build75060413.12
psa-imp-4.1-fc3.build75060410.18
psa-locale-base-en-US-7.5.4-fc3.build75051115.01
psa-boost-1.32.0-6.fc3
psa-logrotate-3.7-fc3.build80060331.13
psa-qmail-1.03-fc3.build80060331.13
psa-key-7.5-fc3.build75050824.12
psa-7.5.4-fc3.build75050824.12
psa-vpn-1.0.0-fc3.build75050824.12
psa-fileserver-1.0.0-fc3.build75050824.12
frontpage-5.0-72psa.fc3
perl-Font-AFM-1.18-61psa
perl-MLDBM-2.01-61psa
perl-HTML-Format-1.23-51psa
mod_webapp-4.1.29-41psa.fc3
psa-qmail-rblsmtpd-0.70-fc3.build75050824.12
psa-courier-imap-add-8.0.0-fc3.build80060331.13
psa-proftpd-1.2.10-fc3.build80060331.13
psa-pre-keyupdate-7.5.4-fc3.build75050824.12
psa-firewall-1.0.1-fc3.build75050824.12
psa-bf1942-1.0.0-fc3.build75050824.12
perl-MLDBM-Sync-0.30-61psa
psa-tomcat-configurator-7.5.4-fc3.build75050824.12
psa-sbm-1.1-35
psa-spamassassin-7.5.4-fc3.build75060118.18
psa-ingo-1.1-fc3.build75060412.17
psa-api-rpc-protocol-7.5.4-fc3.build75060321.20
psa-agent-1.3.5-75060321.20
psa-hotfix6-7.5.4-fc3.build75060321.20
psa-selinux-8.0.0-fc3.build80060331.13
psa-pylibplesk-8.0.0-fc3.build80060331.13

I have reason to believe that the psa-qmail version I have is from 8.0 release.

Btw, I'm not going to try to upgrade to the new version (8.0) until all the problems get worked out.

Is there a way I can revert back to the 7.5.4 version of qmail, or get my current setup working?

Thanks.