Home

October 23,2025.

Thunderbird now offers us by default to create accounts in the new Account Hub.
Account hub is experimental.
Go to Thunderbird configuration settings.
Then General,
and uncheck this box (Create accounts in the new Account Hub).

Postfixadmin 4.0.1 requires composer libraries.
The developer created an install.sh script to simplify the installation.
Certificates are SSL ECC.
I will no longer be updating to future versions of RedHat 9.
It will be RedHat 10.

The latest versions of Thunderbird and self-signed certificates are no longer possible.
The fault lies with the Thunderbird developers.

For Windows.
My simplest solution is to download the Thunderbird 128 ESR version.
Disconnect the network during installation.
Do not allow updates in the Thunderbird settings.
Reconnect the network.
Set up an SSL and STARTTLS email account.
Send and receive messages using SSL and TLS.
Allow Thunderbird updates.
Upgrade to the latest version of Thunderbird.
Add another email account.

For Macs.
You can retrieve the cert_override.txt file.
located in the Windows user's Thunderbird profile.
Then copy and paste this file into the Mac user's profile.

For the first time adding a mail account, Thunderbird only allows Imap for the self-signed certificate.
You can edit the cert_override.txt file.

The cert_override.txt file is located in the Thunderbird email home folder.
For Linux, the Thunderbird home folder is a hidden folder in the user's home folder.
cd /home/<your user>/.thunderbird
find . -name cert_override.txt

It is clearly written that you should not edit cert_override.txt.
But it is possible with the vi editor.
Use the yy and p commands to copy and paste the lines to be added.
Replace imap with smtp and the ports.
Use the :set list command to check for hidden characters.
vi cert_override.txt

# PSM Certificate Override Settings file  
# This is a generated file!  Do not edit.  
imap.ol26modk.com:143:  OID.2.16.840.1.101.3.4.2.1      12:6F:2D:6C:A6:D0:20:96:61:1D:41:F4:A7:33:21:BB:19:BA:22:4E:6A:5C:28:04:71:01:F2:6E:A2:B0:61:0A  
imap.ol26modk.com:993:  OID.2.16.840.1.101.3.4.2.1      12:6F:2D:6C:A6:D0:20:96:61:1D:41:F4:A7:33:21:BB:19:BA:22:4E:6A:5C:28:04:71:01:F2:6E:A2:B0:61:0A  
smtp.ol26modk.com:587:  OID.2.16.840.1.101.3.4.2.1      12:6F:2D:6C:A6:D0:20:96:61:1D:41:F4:A7:33:21:BB:19:BA:22:4E:6A:5C:28:04:71:01:F2:6E:A2:B0:61:0A  
smtp.ol26modk.com:465:  OID.2.16.840.1.101.3.4.2.1      12:6F:2D:6C:A6:D0:20:96:61:1D:41:F4:A7:33:21:BB:19:BA:22:4E:6A:5C:28:04:71:01:F2:6E:A2:B0:61:0A  

January 29, 2025.
I did a clean install again.

• You have after open session.

Invalid token (session timeout; refresh the page and try again?)  

cd /var/lib/php
Change apache group by nginx .
chgrp -R nginx opcache
chgrp -R nginx session
chgrp -R nginx wsdlcache
systemctl restart php-fpm

Installation from Red Hat 9.4.
Beware,there are differences with Almalinux 9.4.
But easily found.

Only checked on Ipad version IOS 15.6.
The email password must be strong and at least 8 characters.
The duration of the self-signed certificate must be one year only.

Usually I can select "trust" when the self-signed certificate is displayed on the Ipad.
This is no longer possible.
This may be a bug in IOS 15.6 and also is IOS 18.
The mail configuration on IOS 18 will be done in the apps.

vi /etc/yum.repos.d/mariadb.repo
Change baseurl 11.X by the latest version MariaDB.
dnf update
Answer "no".
dnf remove MariadDBserver
dnf install MariaDB-server
systemctl enable --now mariadb
mariadb-upgrade -u root -p

Find your kernel.
uname -a
See free space.
df /boot
ls -l /boot
List kernels.
rpm -qa| grep kernel-core
Remove old kernel.
dnf remove kernel-core-XX
Now see free space.
df /boot

dnf update
Answer "yes".
reboot

vi /etc/crontab  
delete # at the line @reboot root setenforce 0  
# disable all services  
systemctl disable httpd  
systemctl  disable mariadb  
systemctl disable php-fpm  
systemctl disable postfix  
systemctl disable dovecot  
reboot  
dnf update  
#update MariaDB - Perhaps you remove old MariaDb-server  
curl -LsS https://r.mariadb.com/downloads/mariadb_repo_setup | bash  
dnf update  
mariadb-upgrade -u root -p  
# update PHP 8.3  
dnf install http://fr2.rpmfind.net/linux/remi/enterprise/remi-release-9.2.rpm  
dnf module reset php  
dnf module enable php:remi-8.3  
dnf update  
vi /etc/crontab  
add # at the line #@reboot root setenforce 0  
reboot  
# enable all services  
systemctl enable --now mariadb  
systemctl status mariadb  
systemctl enable --now httpd  
systemctl status httpd  
systemctl enable --now php-fpm  
systemctl status php-fpm  
systemctl enable --now postfix  
systemctl status  postfix  
systemctl enable --now dovecot  
systemctl status dovecot  
reboot  
# all is well  

systemctl status postfix
The postfix service status displays this message.
restorecon[4541]: /usr/sbin/restorecon: lstat(/var/spool/postfix/pid/master.pid) failed: No such file or director
The solution to remove this message.
systemctl stop postfix
systemctl disable postfix
vi /usr/lib/systemd/system/postfix.service
Add a line.

ExecStartPre=-/usr/bin/touch /var/spool/postfix/pid/master.pid  

Before the line below.

ExecStartPre=-/usr/sbin/restorecon -R /var/spool/postfix/pid/master.pid  

systemctl enable --now postfix
systemctl status postfix
reboot and recheck postfix status.

If for some reason the dovecot or postfix services would be stopped.

mkdir -p /etc/systemd/system/dovecot.service.d
vi /etc/systemd/system/dovecot.service.d/custom.conf

#linuxbabe  Xiao Guoan  
[Service]  
Restart=always  
RestartSec=5s  

systemctl daemon-reload
test: pkill dovecot
wait 5 s.
systemctl status dovecot

mkdir -p /etc/systemd/system/postfix.service.d
vi /etc/systemd/system/postfix.service.d/custom.conf

#linuxbabe  Xiao Guoan  
[Service]  
Restart=on-failure  
RestartSec=5s  

systemctl daemon-reload
test: pkill master
wait 5 s.
systemctl status postfix

• Purge all queues.
  postsuper -d ALL
• Queues list.
  postqueue -p
• Mail Server : Mail Log Report : pflogsumm.
  dnf -y install postfix-perl-scripts
  Generate mail log summary for yesterday.
  perl /usr/sbin/pflogsumm -d yesterday /var/log/maillog