If you use iptables you can also uninstall nftables

sudo apt purge nftables

in my case nftables was block all ping requests...

You saved my life buddy. I was unable to access my server through any port and had no ideas about nftables. I removed it and everything is up and running now. Thank you!

sudo apt purge nftables

in my case nftables was block all ping requests...

I had the same need to uninstall iRedMail, because it appears to have been installed incorrectly (constantly getting errors in MySQL queries).

I didn't want to reinstall my entire server setup though, so what i did was:

sudo apt-get remove --purge postfix* nginx* sa-compile* dovecot* fail2ban* ldap* mysql* sogo* clamav* amavis* nginx* php* mlmmj*
sudo apt autoremove --purge

This uninstalled most of the packages from iRedMail, but we want to purge it from OS completely, right? So, the next step is to remove remaining directories:

sudo rm -rf /var/run/mysql /var/run/amavis /var/run/mlmmjadmin /var/run/iredadmin /var/run/fail2ban /var/run/netdata

sudo rm -rf /etc/mysql /etc/clamav /etc/dovecot /etc/fail2ban /etc/netdata /etc/spamassassin

Next up, we remove all unwanted users:

sudo userdel -f iredadmin
sudo userdel -f iredapd
sudo userdel -f clamav
sudo userdel -f mlmmj
sudo userdel -f netdata
sudo userdel -f vmail
sudo userdel -f debian-spamd
sudo userdel -f mail

Then reboot the system and it has to be it

Let's me add additional some need todo.
1.systemd-sysv-install disable postfix
2.uninstall postfix
3.use `systemctl disable ` disable the
    sogo.service
    mlmmjadmin.service
    iredadmin.service
    iredapd.service

I didn't want to reinstall my entire server setup though, so what i did was:

sudo apt-get remove --purge postfix* nginx* sa-compile* dovecot* fail2ban* ldap* mysql* sogo* clamav* amavis* nginx* php* mlmmj*
sudo apt autoremove --purge

This uninstalled most of the packages from iRedMail, but we want to purge it from OS completely, right? So, the next step is to remove remaining directories:

sudo rm -rf /var/run/mysql /var/run/amavis /var/run/mlmmjadmin /var/run/iredadmin /var/run/fail2ban /var/run/netdata

sudo rm -rf /etc/mysql /etc/clamav /etc/dovecot /etc/fail2ban /etc/netdata /etc/spamassassin

Next up, we remove all unwanted users:

sudo userdel -f iredadmin
sudo userdel -f iredapd
sudo userdel -f clamav
sudo userdel -f mlmmj
sudo userdel -f netdata
sudo userdel -f vmail
sudo userdel -f debian-spamd
sudo userdel -f mail

Then reboot the system and it has to be it

dirmngr
dialog
postfix
postfix-pcre
libsasl2-modules
mysql-client
mysql-server
pos

log
Start-Date: 2019-11-09  17:38:08
Commandline: apt-get install -y dirmngr
Install: libksba8:amd64 (1.3.3-1ubuntu0.16.04.1, automatic), dirmngr:amd64 (2.1.11-6ubuntu2.1), libnpth0:amd64 (1.2-3, automatic)
End-Date: 2019-11-09  17:38:15

Start-Date: 2019-11-09  17:38:36
Commandline: apt-get install -y dialog
Install: dialog:amd64 (1.3-20160209-1)
End-Date: 2019-11-09  17:38:38

Start-Date: 2019-11-09  17:43:57
Commandline: apt-get install -y postfix postfix-pcre libsasl2-modules mysql-client mysql-server postfix-mysql libdbd-mysql-perl php-cli php-fpm php-json php-gd php-curl mcrypt php-intl php-xml php-mbstring php-mcrypt php-mysql nginx-full dovecot-imapd dovecot-pop3d dovecot-lmtpd dovecot-managesieved dovecot-sieve dovecot-mysql amavisd-new libcrypt-openssl-rsa-perl libmail-dkim-perl clamav-freshclam clamav-daemon spamassassin altermime arj nomarch cpio lzop cabextract p7zip-full rpm ripole libmail-spf-perl unrar-free pax lrzip mlmmj python-sqlalchemy python-dnspython python-mysqldb python-pymysql python-jinja2 python-netifaces python-webpy python-beautifulsoup python-lxml python-pycurl python-requests uwsgi uwsgi-plugin-python python-bcrypt fail2ban zlib1g libuuid1 libmnl0 curl lm-sensors netcat bzip2 acl patch cron tofrodos logwatch unzip bsdutils liblz4-tool
Install: libmpc3:amd64 (1.0.3-1, automatic), python-six:amd64 (1.10.0-3, automatic), libmpx0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libnet-libidn-perl:amd64 (0.12.ds-2build2, automatic), python-sqlalchemy:amd64 (1.0.11+ds1-1ubuntu2), altermime:amd64 (0.3.10-7), librpmsign3:amd64 (4.12.0.1+dfsg1-3build3, automatic), libgcc-5-dev:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), rpm2cpio:amd64 (4.12.0.1+dfsg1-3build3, automatic), php-gd:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), python-pymysql:amd64 (0.7.2-1ubuntu1), postfix-pcre:amd64 (3.1.0-3ubuntu0.3), gnustep-common:amd64 (2.6.6-3, automatic), python-openssl:amd64 (0.15.1-2ubuntu0.2, automatic), spamassassin:amd64 (3.4.2-0ubuntu0.16.04.1), libauthen-sasl-perl:amd64 (2.1600-1, automatic), php-xml:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), libexttextcat-data:amd64 (3.4.4-1ubuntu3, automatic), libunix-syslog-perl:amd64 (1.1-2build7, automatic), libnet-ssleay-perl:amd64 (1.72-1build1, automatic), linux-libc-dev:amd64 (4.4.0-166.195, automatic), libnss3-nssdb:amd64 (2:3.28.4-0ubuntu0.16.04.6, automatic), postfix-mysql:amd64 (3.1.0-3ubuntu0.3), logwatch:amd64 (7.4.2-1ubuntu1), python-markupsafe:amd64 (0.23-2build2, automatic), libnorm1:amd64 (1.5r6+dfsg1-6+ubuntu16.04.1+deb.sury.org+1, automatic), libc6-dev:amd64 (2.23-0ubuntu11, automatic), mlmmj:amd64 (1.2.18.1-1ubuntu1), python-pycurl:amd64 (7.43.0-1ubuntu1), unrar-free:amd64 (1:0.0.1+cvs20140707-4~build0.16.04.1), whois:amd64 (5.2.11, automatic), python-dnspython:amd64 (1.12.0-1), libarchive-zip-perl:amd64 (1.56-2ubuntu0.1, automatic), python-requests:amd64 (2.9.1-3ubuntu0.1), libpgm-5.2-0:amd64 (5.2.122~dfsg-2+deb.sury.org~xenial+1, automatic), re2c:amd64 (0.16-1, automatic), arj:amd64 (3.10.22-14), libdate-manip-perl:amd64 (6.52-1, automatic), librpmbuild3:amd64 (4.12.0.1+dfsg1-3build3, automatic), libzmq5:amd64 (4.3.1-5+ubuntu16.04.1+deb.sury.org+1, automatic), libobjc4:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), dovecot-lmtpd:amd64 (1:2.2.22-1ubuntu2.12), dovecot-mysql:amd64 (1:2.2.22-1ubuntu2.12), cpp-5:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libdbi-perl:amd64 (1.634-1build1, automatic), lrzip:amd64 (0.621-1), python-netifaces:amd64 (0.10.4-0.1build2), cpp:amd64 (4:5.3.1-1ubuntu1, automatic), mysql-client:amd64 (5.7.27-0ubuntu0.16.04.1), libexttextcat-2.0-0:amd64 (3.4.4-1ubuntu3, automatic), libnetaddr-ip-perl:amd64 (4.078+dfsg-1build1, automatic), libarchive13:amd64 (3.1.2-11ubuntu0.16.04.7, automatic), libitm1:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libconvert-tnef-perl:amd64 (0.18-1, automatic), debugedit:amd64 (4.12.0.1+dfsg1-3build3, automatic), tofrodos:amd64 (1.7.13+ds-2ubuntu1), libnet-dns-perl:amd64 (0.81-2build1, automatic), gcc:amd64 (4:5.3.1-1ubuntu1, automatic), fail2ban:amd64 (0.9.3-1), libcilkrts5:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), python-chardet:amd64 (2.3.0-2, automatic), libio-socket-inet6-perl:amd64 (2.72-2, automatic), dovecot-imapd:amd64 (1:2.2.22-1ubuntu2.12), libasan2:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libmime-tools-perl:amd64 (5.507-1, automatic), python-cheetah:amd64 (2.4.4-3.fakesyncbuild1, automatic), libquadmath0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libwavpack1:amd64 (4.75.2-2ubuntu0.2, automatic), python-lxml:amd64 (3.5.0-1ubuntu0.1), libmatheval1:amd64 (1.1.11+dfsg-2, automatic), dovecot-sieve:amd64 (1:2.2.22-1ubuntu2.12), lzop:amd64 (1.03-3.2), libisl15:amd64 (0.16.1-1, automatic), python-enum34:amd64 (1.1.2-1, automatic), nginx-common:amd64 (1.10.3-0ubuntu0.16.04.4, automatic), python-beautifulsoup:amd64 (3.2.1-1), libnet-cidr-perl:amd64 (0.17-1, automatic), libnet-smtp-ssl-perl:amd64 (1.03-1, automatic), libnet-server-perl:amd64 (2.008-2, automatic), dovecot-pop3d:amd64 (1:2.2.22-1ubuntu2.12), libio-socket-ssl-perl:amd64 (2.024-1, automatic), libmail-spf-perl:amd64 (2.9.0-4), libconvert-binhex-perl:amd64 (1.125-1, automatic), python3-pyinotify:amd64 (0.9.6-0fakesync1, automatic), python-ndg-httpsclient:amd64 (0.4.0-3, automatic), uwsgi-plugin-python:amd64 (2.0.12-5ubuntu3.2), librpmio3:amd64 (4.12.0.1+dfsg1-3build3, automatic), php-json:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), python-cryptography:amd64 (1.2.3-1ubuntu0.2, automatic), ntpdate:amd64 (1:4.2.8p4+dfsg-3ubuntu5.9, automatic), nginx-full:amd64 (1.10.3-0ubuntu0.16.04.4), amavisd-new:amd64 (1:2.10.1-2ubuntu1), pax:amd64 (1:20151013-1), rpm-common:amd64 (4.12.0.1+dfsg1-3build3, automatic), libio-multiplex-perl:amd64 (1.16-1, automatic), python-cffi-backend:amd64 (1.5.2-1ubuntu1, automatic), python-ipaddress:amd64 (1.0.16-1, automatic), libtsan0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), php-curl:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), dovecot-core:amd64 (1:2.2.22-1ubuntu2.12, automatic), p7zip-full:amd64 (9.20.1~dfsg.1-4.2ubuntu0.1), libubsan0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libberkeleydb-perl:amd64 (0.55-1build1, automatic), python-bcrypt:amd64 (2.0.0-2build1), unar:amd64 (1.9.1-1, automatic), python-jinja2:amd64 (2.8-1ubuntu0.1), rpm:amd64 (4.12.0.1+dfsg1-3build3), uwsgi-core:amd64 (2.0.12-5ubuntu3.2, automatic), libmail-dkim-perl:amd64 (0.40-1), librpm3:amd64 (4.12.0.1+dfsg1-3build3, automatic), make:amd64 (4.1-6, automatic), gcc-5:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libio-stringy-perl:amd64 (2.110-5, automatic), dovecot-managesieved:amd64 (1:2.2.22-1ubuntu2.12), python-pkg-resources:amd64 (20.7.0-1, automatic), python-html5lib:amd64 (0.999-4, automatic), libmailtools-perl:amd64 (2.13-1, automatic), php7.3-fpm:amd64 (7.3.11-1+ubuntu16.04.1+deb.sury.org+1, automatic), spamc:amd64 (3.4.2-0ubuntu0.16.04.1, automatic), liblz4-tool:amd64 (0.0~r131-2ubuntu2), php-cli:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), php-intl:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), python-urllib3:amd64 (1.13.1-2ubuntu0.16.04.3, automatic), clamav:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1, automatic), python-webpy:amd64 (1:0.37+20120626-1), libgnustep-base1.24:amd64 (1.24.7-1build2, automatic), python-bs4:amd64 (4.4.1-1, automatic), libcrypt-openssl-rsa-perl:amd64 (0.28-2build2), liblua5.2-0:amd64 (5.2.4-1ubuntu1, automatic), liblsan0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libgomp1:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libcrypt-openssl-bignum-perl:amd64 (0.06-1build1, automatic), clamav-daemon:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1), libconvert-uulib-perl:amd64 (1:1.4~dfsg-1build5, automatic), clamdscan:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1, automatic), clamav-freshclam:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1), nomarch:amd64 (1.4-3), python-pyasn1:amd64 (0.1.9-1, automatic), php-fpm:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), libmhash2:amd64 (0.9.9.9-7, automatic), sa-compile:amd64 (3.4.2-0ubuntu0.16.04.1, automatic), gnustep-base-runtime:amd64 (1.24.7-1build2, automatic), manpages-dev:amd64 (4.04-2, automatic), php-mbstring:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), libsocket6-perl:amd64 (0.25-1build2, automatic), gnustep-base-common:amd64 (1.24.7-1build2, automatic), cabextract:amd64 (1.6-1), libdbd-mysql-perl:amd64 (4.033-1ubuntu0.1), libc-dev-bin:amd64 (2.23-0ubuntu11, automatic), libdigest-hmac-perl:amd64 (1.03+dfsg-1, automatic), libnss3:amd64 (2:3.28.4-0ubuntu0.16.04.6, automatic), lm-sensors:amd64 (1:3.4.0-2), ripole:amd64 (0.2.0+20081101.0215-1), netcat:amd64 (1.10-41), python-mysqldb:amd64 (1.3.7-1build2), clamav-base:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1, automatic), netcat-traditional:amd64 (1.10-41, automatic), python-idna:amd64 (2.0-3, automatic), libclamav9:amd64 (0.101.4+dfsg-0ubuntu0.16.04.1, automatic), libatomic1:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libcc1-0:amd64 (5.4.0-6ubuntu1~16.04.12, automatic), libjansson4:amd64 (2.7-3ubuntu0.1, automatic), libyaml-0-2:amd64 (0.1.6-3, automatic), python-flup:amd64 (1.0.2-5, automatic), php-mysql:amd64 (2:7.3+70+ubuntu16.04.1+deb.sury.org+6), python-sqlalchemy-ext:amd64 (1.0.11+ds1-1ubuntu2, automatic), libllvm3.6v5:amd64 (1:3.6.2-3ubuntu2, automatic), libsys-hostname-long-perl:amd64 (1.5-1, automatic), libnet-ip-perl:amd64 (1.26-1, automatic), libnspr4:amd64 (2:4.13.1-0ubuntu0.16.04.1, automatic), uwsgi:amd64 (2.0.12-5ubuntu3.2), mcrypt:amd64 (2.6.8-1.3ubuntu1)
Remove: courier-imap:amd64 (4.10.0-20120615-1ubuntu7), courier-pop:amd64 (0.68.2-1ubuntu7)
Error: Sub-process /usr/bin/dpkg returned an error code (1)
End-Date: 2019-11-09  17:46:32

could you be polite and explain why does youre script creates new users and groups??

Removing user `amavis' ...

thank god i dont use nginx and could install all of this

what kind of "software" is this if it makes you have to reinstall your entire server... redicilous.

iRedMail is not the traditional "software", it's a solution which installs and configures many softwares for you. you can not simply remove one software as complete uninstall.

You can remove the software binary packages installed by iRedMail manually, also their config files and data. It's too risk to remove by a script without confirm one-by-one. Incorrectly removing any data will cause more trouble.

==== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version:
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx):
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
======== Required information ====
- iRedMail version (check /etc/iredmail-release):
- Linux/BSD distribution name and version: ubuntu 16.04 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL):
- Web server (Apache or Nginx): apache
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi,

I'd like to uninstall iRedMail completely, and reinstall it later on.
The problem when i try to download the script mentioned in this post
How to uninstall iRedMail it gives me "ERROR 404: Not Found."

what should i do?

I think that you should re-install server completly to remove iredmail

Hi,

I'd like to uninstall iRedMail completely, and reinstall it later on.
The problem when i try to download the script mentioned in this post
How to uninstall iRedMail it gives me "ERROR 404: Not Found."

what should i do?