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The newer version of thunderbird are more strict on certificates, specially on self-signed certificates. If you have a private imap-server that you maintain yourself you probably use this. You can find a tutorial on this site: https://softwareprocess.es/homepage/posts/dovecot-thunderbird-ssl-alert-n...

Sounds like the client is not accepting the certificate. did you change the certificate of the server recently ? I think you need to accept the new certificate on the client software. In K-9 it is in Settings > accounts > Fetching mail > Incoming Server > Next of Advanced and accept the new certific...

The problem is comparing different encode character-sets. You can see the character-sets with: SHOW VARIABLES LIKE 'char%'; SHOW CREATE TABLE table_name; FYI: utf8mb4 is NOT a character encoding, utf8mb4 is just MySQL's nickname for utf8. what MySQL calls utf8 is actually a 3-byte subset of the real...

found a solution.
Apparently something went wrong or was incomplete with the latest update
to mysql Ver 15.1 Distrib 10.11.6-MariaDB

running the upgrade command solved a lot of problems:

Hello I get the following error in the logs of mariadb/mysql mariadbd[721379]: 2024-09-22 17:48:04 1693 [ERROR] Incorrect definition of table mysql.column_stats: expected column 'hist_type' at position 9 to have type e…UBLE_PREC_HB'). mariadbd[721379]: 2024-09-22 17:48:04 1693 [ERROR] Incorrect defi...

With the lastest version of opera (version 125.0.6422.143) (and Chromium) the last workaround doesn't work anymore. It crashes the page on youtube and doesn't play the videos in rumble.com. You can download libffmpeg.so from : https://github.com/iteufel/nwjs-ffmpeg-prebuilt/releases/ and copy over t...

I got the message in my logs /var/log/mysql/error.log Plugin mysql_native_password reported: ''mysql_native_password' is deprecated and will be removed in a future release. Please use caching_sha2_password instead' So how to fix this ? On MySQL 8.0.34 through 8.3, you get this warning. After MySQL 8...

The event_Scheduler is, a way to Schedule Events (in this case queries) to run in MySQL at a given time. It is simply waiting for an event to trigger it. It is enabled by default, but can be disabled by running: SET @@global.event_scheduler = 0; or add it to my.conf of /etc/mysql/mysql.conf.d/mysqld...

Grep thinks that it is binary file for some reason,
and doesn't process it.
Maybe there are some special characters in the txt file.

You can solve it by forcing:
grep --text
grep -a
or grep --binary-files=text

The certificate on your server is part of a chain. Many time the are delivered as separated files. Something like : server.cert and server.ca-bundle For dovecot, it easier to put them 1 file (order is important ! ). And add the file in /etc/dovecot/conf.d/10-ssl.conf ssl_cert = </etc/ssl/private/cer...