This trick doesn't work at my system:

cd /opt/www/iredadmin/tools/
python3 reset_user_password.py user@domain.ltd '123456'

This runs flawless (see iredmail manual):
$ doveadm pw -s 'ssha512' -p '123456'
{SSHA512}jOcGSlKEz95VeuLGecbL0MwJKy0yWY9foj6UlUVfZ2O2SNkEExU3n42YJLXDbLnu3ghnIRBkwDMsM31q7OI0jY5B/5E=

sql> USE vmail;
sql> UPDATE mailbox SET password='{SSHA512}jOcGSlKEz95VeuLGecbL0MwJKy0yWY9foj6UlUVfZ2O2SNkEExU3n42YJLXDbLnu3ghnIRBkwDMsM31q7OI0jY5B/5E=' WHERE username='user@domain.ltd';

Note, I don't know this could create issues but it gave and error failed to install.
On fresh install from November 2025 you see:
py311-cython3-3.1.6

This was till end of October 2025 and some errors massages:
py311-cython-version-number

Solved by:
root@mx:/usr/ports/lang/cython3 # make install clean

try to promote this user as a global admin:
https://docs.iredmail.org/promote.user. … admin.html

I get ERROR 1062 (23000): Duplicate entry 'postmaster@xxxxx.com-ALL' for key 'domain_admins.PRIMARY'

so seems postmaster was already promoted, but still can't log in.

There's no password in "iredadmin" database, iRedAdmin queries accounts from `vmail` database.

Reset postmaster@' password: https://docs.iredmail.org/reset.user.password.html

Thanks - that made it possible to log in as a mail user, but still not into iRedAdmin, so I guess I also need to update the password in the iredadmin database? Is that also the "mailbox" field (as the instructions you linked to only seem to update the "mailbox" field in the "vmail" database)?

The sql username is same as database name, except user "vmailadmin" (it accesses "vmail" database with read+write privileges).

Hmm - both vmail and vmailadmin users work with the vmailadmin database, but the domain admin user (postmaster@domain) doesn't work with the iredadmin database.

Did you ever verify the sql usernames and password with "mysql" command? Try to connect to mysql server with these usernames and passwords.

What are the database names?

julf wrote:

I did not change them, I assume they are taken from the "config" file.

Please double check and verify whether they're correct ones.

All the passwords in /usr/local/etc/postfix/mysql/* and /usr/local/etc/dovecot/dovecot-mysql.conf are the same as the "Bind account (read-only)" one, and iredadmin_db_password in /usr/local/www/iRedAdmin-2.6/settings.py matches the iRedAdmin SQL database password in iRedMail.tips

julf wrote:

Removed runtime/install.status and re-ran iRedMail.sh

This is not supported by iRedMail installer.

Ah. Thanks! What is the process for reinstalling? Individually removing all the packages first?

Removed runtime/install.status and re-ran iRedMail.sh

This is not supported by iRedMail installer.

I did not change them, I assume they are taken from the "config" file.

Please double check and verify whether they're correct ones.

- What do you mean by "reinstall"?

Removed runtime/install.status and re-ran iRedMail.sh

I did not change them, I assume they are taken from the "config" file.