Installation/Configuration

CNAME Record

invalid@example.com (Kemp) — Wed, 13 May 2026 03:20:56 +0000

I have setup CNAME record for domain1.com as follows:

Hostname: xyz
Target Hostname: domain2.com.

When I go to xyz.domain1.com it's loading the default IP address page of domain2.com instead of loading domain2.com website.

Thank you!

Website backup

invalid@example.com (lnxgs) — Tue, 12 May 2026 18:55:45 +0000

Hello, I'd like to backup my websites and to save disk space so I decided to choose a better compress method then the default one.
I set the backup type zip (bzip2) but the website backup file is a tar.gz.

Ideas?
I've the last version of Ispconfig on Debian Bookworm.

Thank you all

acme _ecc

invalid@example.com (SamTzu) — Sun, 10 May 2026 03:07:03 +0000

Now that acme has changed it's default certs to use ECC (Elliptic Curve Cryptography) Certificates how do we update older ispconfig servers all to use _ecc folders (with postfix and dovecot). Some still use /root.acme/fqdn without _ecc in folder name. Can we just remove the old folders and generate new ones?

Will this dovecot config break...

Code:

ssl_cert =

Will ispconfig use acme dh.pem file?...

acme _ecc

Is There Already a Safe Upgrade Guide from Debian 12 to Debian 13?

invalid@example.com (Marcio Urakawa) — Fri, 08 May 2026 14:24:16 +0000

Has anyone already tested a reliable and secure migration process from Debian 12 (Bookworm) to Debian 13 (Trixie)?

acme.sh giving curl error code 28

invalid@example.com (Gerry F) — Fri, 08 May 2026 06:22:25 +0000

Since May 1st, 2026, two of my servers are emailing these errors:

Subject: Cron "/root/.acme.sh"/acme.sh --cron --home "/root/.acme.sh" > /dev/null
[Fri May 1 10:34:24 AM EDT 2026] Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: 28

Server2 has emailed twice (May 1st, May 5th)
Server 3 has emailed twice (May 2nd, May 3rd)
Nothing since the 5th though.

I have two other servers that so far, are not giving me this error via email....

acme.sh giving curl error code 28

Rspamd Configuration vs. the ISPConfig3 Admin GUI

invalid@example.com (Shyciii) — Tue, 05 May 2026 08:11:19 +0000

Hello,
Our Ispconfig3 servers were still running Amavisd, and we have now switched to Rspamd based on the following article:
https://www.howtoforge.com/replacing-amavisd-with-rspamd-in-ispconfig/
Although the article is somewhat outdated (as it refers to Debian 13), the issue was easily resolved.
However, we ran into a problem (which exists on every server running rspamd) where it classifies even completely valid emails as spam (even official bank and postal correspondence). I...

Rspamd Configuration vs. the ISPConfig3 Admin GUI

ondrej repository error while installing ispconfig

invalid@example.com (comsupany) — Sun, 03 May 2026 15:55:47 +0000

I am installing ispconfig on Ubuntu 24.04 using the w get get.ispconfig.org command but I get this error:
TimeoutError: [Errno 110] Connection timed out
[ERROR] Exception occurred: ISPConfigOSException -> Command add-apt-repository -y ppandrej/php failed. (/ispconfig.ai.php:15)

The repository seems to be down. Is there a work around where I can still use this installation method?

Conf-custom upgrade ISPConfig version

invalid@example.com (Fran17) — Wed, 29 Apr 2026 03:15:58 +0000

Hello,
I’m currently testing ways to automate the ISPConfig upgrade using Ansible.
There are configuration files, such as main.cf, dovecot.conf and the amavis 50-user file, which I modify during the installation process to apply the settings I need.
I have seen and read that ISPConfig has a conf-custom directory where you can place the templates you want to be applied.
I’m currently trying to create a template for Amavis; I’ve saved it both in the root of conf-custom and in...

Conf-custom upgrade ISPConfig version

Double Trouble with SSL certs because of parallel installed certbot (and nginx setup)

invalid@example.com (Uwe R) — Wed, 29 Apr 2026 03:05:21 +0000

After months of running a nginx server on a apache configured ISPconfig I now ran into a problem.

I didn't realize that this is a decision with such heavy impact when I installed that instance.

But everything worked fine, no problems but after updating to Debian 11 and ISPconfig 3.3.1p1 I don't get new LE certificates.

The LE log on the machine tells me everything went fine, the stored certs in /var/www/clients/client1/web8/ssl/-le.crt are NEW, but to the outside an old version is...

Double Trouble with SSL certs because of parallel installed certbot (and nginx setup)

ISPconfig 3.3.1p1 on RHEL 10.1: postfix "btree" type has been removed. Must set to"lmdb"

invalid@example.com (DarioL) — Tue, 28 Apr 2026 12:31:10 +0000

Due to a error on default postfix configuration, postfix in RHEL 10 has broken "postscreen_cache_map" and "address_verify_map" setting.
https://www.reddit.com/r/AlmaLinux/comments/1nl6j8v/postfix_in_almalinux_10_has_broken_postscreen/
This causes a incorrect functioning of ISPConfig.
IMHO, It would be better to set these values during ispconfig installation to "lmdb"
I have fixed with:

Code:

postconf -e 'address_verify_map = lmdb:$data_directory/verify_cache'
postconf -e...

ISPconfig 3.3.1p1 on RHEL 10.1: postfix "btree" type has been removed. Must set to"lmdb"

ISPConfig + Wordpress Theme needs simplexml and mcrypt

invalid@example.com (icebear) — Tue, 21 Apr 2026 11:42:07 +0000

hello,
i run a server with ispconfig (3.2.12p1 on debian 12) and i works well.
i install a wordpress template that needs simplexml and mcrypt to work correctly. tested with a tool inside the theme.
So i try to install it on my server, but this error is shown:
----
php -m | grep simplexml
PHP Warning: PHP Startup: Unable to load dynamic library './ext/simplexml.so' (tried: ./ext/simplexml.so (./ext/simplexml.so: cannot open shared object file: No such file or directory),...

ISPConfig + Wordpress Theme needs simplexml and mcrypt

Managing Sites Using REST API

invalid@example.com (GR9) — Mon, 20 Apr 2026 06:27:52 +0000

Hello,

I am having some problems trying to setup sites using the api. I was able to successfully call 'login' and 'client_add', but am having problems with 'sites_web_domain_add' and 'sites_web_domain_get'.

Calling the ISPConfig RESTAPI using https domain[DOT]tld/remote/json.php?
Using API docs from the installer (ISPConfig-3.3.1p1/ispconfig3_install/remoting_client/API-docs/).
/usr/local/ispconfig/interface/lib/config.inc.php contains define('ISPC_APP_VERSION', '3.3.1p1');...

Managing Sites Using REST API

ispconfig cli

invalid@example.com (tr909192) — Thu, 16 Apr 2026 13:48:44 +0000

I would like to know if ispconfig 3 has a cli for command line. Our setup is master/slave with several servers.
thank you

Invalid Certificate authority

invalid@example.com (kevin.J) — Thu, 16 Apr 2026 11:57:21 +0000

Hi,

We are facing an invalid certificate authority error on our ISPConfig URL.

https://sendfile.cc/upload/639118533699440941.png

Thank you.

Remote users, Jailkit and SSH authentication

invalid@example.com (Pyanepsion) — Thu, 16 Apr 2026 11:17:19 +0000

Hello,

This question refers to section 4.6.4 ‘Command Line’ (pages 165–166 of the manual).
The documentation presents Jailkit as a standard way to confine remote users.

Could you clarify the expected behaviour regarding SSH authentication in this context?
—Is SSH authentication (key or password) expected to work reliably with chrooted remote users using Jailkit?
—Or should Jailkit mainly be considered a confinement mechanism whose behaviour may depend on the environment and is not...

Remote users, Jailkit and SSH authentication

Additional PHP version is used by default

invalid@example.com (Elio Tondo) — Wed, 15 Apr 2026 11:26:06 +0000

I have the current ISPConfig 3.3.1p1 installed on an AlmaLinux release 9.7 server. All was working well. PHP is the latest version from Remi, 8.5.4, all sites configured to use PHP-FPM.
I had the need to run an old site that was not compatible with PHP 8, and I installed an additional PHP version form Remi (PHP 7.4) and I configured it in the System - Additional PHP versions section. Then I specified this version in the configuration of the "old" site, and I verified that this site is now...

Additional PHP version is used by default

next try to update to Trixie failed

invalid@example.com (muekno) — Mon, 13 Apr 2026 09:30:10 +0000

State; Debian 13 with latest patches, latest ISPconfig installed
What I did:
upgrade Debian12 to 13 no problems.

apt-get install php8.4 php8.4-cli php8.4-cgi php8.4-fpm php8.4-gd php8.4-mysql php8.4-curl php8.4-intl php8.4-pspell php8.4-sqlite3 php8.4-tidy php8.4-xsl php8.4-zip php8.4-mbstring php8.4-soap php8.4-opcache libonig5 php8.4-common php8.4-readline php8.4-xml curl no problem

force uodate latest ISPconfig.

checked apache2 running. showed error in line 146 mods-enabled/*.load...

next try to update to Trixie failed

IMAP/POP3 Config

invalid@example.com (Bampe360) — Thu, 09 Apr 2026 14:33:55 +0000

Hey community! Pretty new over here and also pretty sure that this questions has been solved, but I couldn't find it on the search results (related things but not close) and... I'm going a bit crazy...
Does anyone know how to set in the outlook client and gmail mail the config to be able to read/send mails from there... (IMAP/POP3/SMTP, bla... bla...)
roundcube/webmail is not "the best" to be honest... so I want to be able to use on those tools... Is that possible?

Thanks a zillion in...

IMAP/POP3 Config

Issue with Rspamd learning (IMAPSieve) on Dovecot 2.4.1 (Debian 13)

invalid@example.com (Adrian-Pasmionka) — Tue, 07 Apr 2026 15:16:01 +0000

Hello all,

I’ve been spending the last few hours trying to get a fresh ISPConfig install to handle Rspamd learning (moving emails to Junk), but I’m hitting a wall with Dovecot 2.4.1. It seems this version completely changes the rules, and the old tutorials/templates for dovecot.conf just dosen't work

What I’ve tried:

Section Errors: I tried adding the standard plugin { ... } block to set the imapsieve paths. Dovecot fails to start with: Fatal: Error in configuration file...

Issue with Rspamd learning (IMAPSieve) on Dovecot 2.4.1 (Debian 13)

Debian 12 w/ispconfig - upgrade to Trixie?

invalid@example.com (cartoonz) — Sat, 04 Apr 2026 07:53:11 +0000

Since we can now use Trixie, is it possible to update/upgrade an existing Debian 12 server with ispconfig to Debian 13?
I know I can do Trixie with a fresh install, but I'd rather not have to reconfigure 25 websites from scratch again.
Is there a way, should I keep it as is, or is there an easier method to reinstall all websites/databases/settings/etc. on a clean install?