Re-installing broken postfix on CentOS Virtualmin server

Because postfix did not work well with specific task (mail piping to php script) I had to give a try to reinstallation of postfix. Log is below. Unfortunately, now there is no errors in the log and
when sending an e-mail to the box it doesn’t bounce back with any error notice. Following instructions on http://www.virtualmin.com/node/17748 didn’t help this time.

hostname returns my.mydomain.tld
cat /etc/hosts returns:

127.0.0.1 localhost
65.49.80.106 my.mydomain.tld my
::1 localhost6.localdomain6 localhost6

Did reinstalling postfix totally brake it? Should I try to also re-install its dependecies, which were removed but apparently never installed back again:

fetchmail x86_64 6.3.6-4.el5 installed 1.3 M
mdadm x86_64 2.6.9-3.el5 installed 1.9 M
mutt x86_64 5:1.4.2.2-3.0.2.el5 installed 2.9 M
redhat-lsb i386 4.0-2.1.4.el5 installed 21 k
redhat-lsb x86_64 4.0-2.1.4.el5 installed 22 k

root@my:/root# yum remove postfix Loaded plugins: fastestmirror, security Setting up Remove Process Resolving Dependencies --> Running transaction check ---> Package postfix.x86_64 2:2.3.3-2.3.el5_6 set to be erased --> Processing Dependency: /usr/sbin/sendmail for package: redhat-lsb --> Processing Dependency: /usr/sbin/sendmail for package: redhat-lsb --> Processing Dependency: smtpdaemon for package: fetchmail --> Processing Dependency: smtpdaemon for package: mdadm --> Processing Dependency: smtpdaemon for package: mutt --> Running transaction check ---> Package fetchmail.x86_64 0:6.3.6-4.el5 set to be erased ---> Package mdadm.x86_64 0:2.6.9-3.el5 set to be erased ---> Package mutt.x86_64 5:1.4.2.2-3.0.2.el5 set to be erased ---> Package redhat-lsb.i386 0:4.0-2.1.4.el5 set to be erased ---> Package redhat-lsb.x86_64 0:4.0-2.1.4.el5 set to be erased --> Finished Dependency Resolution

Dependencies Resolved

================================================================================
Package Arch Version Repository Size

Removing:
postfix x86_64 2:2.3.3-2.3.el5_6 installed 8.3 M
Removing for dependencies:
fetchmail x86_64 6.3.6-4.el5 installed 1.3 M
mdadm x86_64 2.6.9-3.el5 installed 1.9 M
mutt x86_64 5:1.4.2.2-3.0.2.el5 installed 2.9 M
redhat-lsb i386 4.0-2.1.4.el5 installed 21 k
redhat-lsb x86_64 4.0-2.1.4.el5 installed 22 k

Transaction Summary

Remove 6 Package(s)
Reinstall 0 Package(s)
Downgrade 0 Package(s)

Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Erasing : mdadm 1/6

Erasing : redhat-lsb 2/6

Erasing : redhat-lsb 3/6

Erasing : mutt 4/6

Erasing : fetchmail 5/6

Erasing : postfix 6/6

warning: /usr/lib64/sasl2/smtpd.conf saved as
/usr/lib64/sasl2/smtpd.conf.rpmsave
warning: /etc/postfix/virtual saved as /etc/postfix/virtual.rpmsave
warning: /etc/postfix/master.cf saved as /etc/postfix/master.cf.rpmsave
warning: /etc/postfix/main.cf saved as /etc/postfix/main.cf.rpmsave

Removed:
postfix.x86_64 2:2.3.3-2.3.el5_6

Dependency Removed:
fetchmail.x86_64 0:6.3.6-4.el5 mdadm.x86_64 0:2.6.9-3.el5
mutt.x86_64 5:1.4.2.2-3.0.2.el5 redhat-lsb.i386 0:4.0-2.1.4.el5
redhat-lsb.x86_64 0:4.0-2.1.4.el5

Complete!

root@my:/root#
yum install postfix
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile

Dependencies Resolved

================================================================================
Package Arch Version Repository Size

Installing:
postfix x86_64 2:2.3.3-2.3.el5_6 base 3.7 M

Transaction Summary

Install 1 Package(s)
Upgrade 0 Package(s)

Total download size: 3.7 M
Is this ok [y/N]: y
Downloading Packages:
postfix-2.3.3-2.3.el5_6.x86_64.rpm | 3.7 MB 00:00

Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : postfix 1/1

Installed:
postfix.x86_64 2:2.3.3-2.3.el5_6

Complete!