Can't switch from Qmail to Postfix

[deltatech]

I am unable to switch from qmail to postfix via the control panel. It opens a new window that just hangs and never loads. While waiting for it to load, I see these 2 processes running..

root 25108 0.1 0.0 133972 20604 ? S 21:58 0:00 /var/cache/parallels_installer/parallels_installer_CentOS_6_x86_64 --service-mode=components --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser
root 25109 0.0 0.0 104952 3032 ? S 21:58 0:00 /var/cache/parallels_installer/parallels_installer_CentOS_6_x86_64 --service-mode=components --enable-xml-output --ssl-cert /usr/local/psa/admin/conf/httpsd.pem --branch release,stable --web-interface --with-ssl --disable-browser

But after waiting 20 minutes, the browser never loaded and the two proceses remain. So I killed both processes and removed /tmp/psa-installer.lock and started again. The same thing happened.

Is there a way to fix this? If not, is there an easy way to switch MTAs from the command line?

 

[abdi]

http://kb.odin.com/en/5801

 

[deltatech]

http://kb.odin.com/en/5801

Thanks, the command line method seems to be the only way to switch MTAs. The control panel can't do it. This use to work but not anymore.

 

[abdi]

Your welcome!
And @Igor has seen your response ...

 

[IgorG]

Try to remove autoinstaller cache with

# rm -rf /var/cache/parallels_installer/