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# Completely disable Amavisd + ClamAV + SpamAssassin

In iRedMail, Amavisd provides below features:

- content-based spam scanning (invoke SpamAssassin)
- Virus scanning (invoke ClamAV)
- DKIM signing
- DKIM verification (through SpamAssassin + Perl module)
- SPF verification (through SpamAssassin + Perl module)
- Disclaimer (throught AlterMIME)

### Stop virus/spam scanning, keep DKIM signing/verification and Disclaimer

If you want to disable virus and spam scanning, but keep DKIM signing and disclaimer, please try this:

- Keep `content_filter = smtp-amavis:[127.0.0.1]:10024` in Postfix config file `/etc/postfix/main.cf`.

- Find below lines in Amavisd config file:

  - On RHEL/CentOS, it's `/etc/amavisd/amavisd.conf`
  - On Debian/Ubuntu, it's `/etc/amavis/conf.d/50-user`
  - On FreeBSD, it's `/usr/local/etc/amavisd.conf`
  - On OpenBSD, it's `/etc/amavisd.conf`

    # @bypass_virus_checks_maps = (1);  # controls running of anti-virus code
    # @bypass_spam_checks_maps  = (1);  # controls running of anti-spam code

Uncomment above lines (removing "# " at the beginning of each line), and restart Amavisd service.

You may want to stop and disable ClamAV service, then remove clamav packages since it's not called by Amavisd or other programs anymore:

Attention

On Linux system with systemd support, you can keep the packages but `mask` the clamav service to prevent it started by other applications with command below:

    # CentOS
    systemctl mask clamd@amavisd

    # Debian/Ubuntu
    systemctl mask clamav-daemon clamav-freshclam

    # CentOS
    systemctl disable --now clamd@amavisd
    systemctl restart amavisd
    yum remove clamav clamav-lib

    # Debian/Ubuntu
    systemctl disable --now clamav-daemon
    systemctl restart amavis
    apt remove clamav-base

    # FreeBSD
    sysrc -f /etc/rc.conf.local clamd=no
    service restart amavisd
    pkg remove clamav

    # OpenBSD
    rcctl disable clamd
    rcctl restart amavisd
    pkg_delete clamav

### Completely disable all features

If you want to completely disable spam and virus scanning services, steps:

- Comment out below two lines in Postfix config file `/etc/postfix/main.cf`:

    content_filter = smtp-amavis:[127.0.0.1]:10024
    receive_override_options = no_address_mappings  # <- it's ok if you don't have this line

- Comment out below line in Postfix config file `/etc/postfix/master.cf`,

      -o content_filter=smtp-amavis:[127.0.0.1]:10026

- Restarting Postfix service is required.
- Disable network services: Amavisd, ClamAV.

Notes:

- ClamAV and SpamAssassin will be invoked by Amavisd, so if you disable Amavisd, those two are disabled too.
- SpamAssassin doesn't have daemon service running in iRedMail solution, so there's no need to stop SpamAssassin service.

#### Update mailing list settings

mlmmj is configured to connect to port `10027` which is served by Amavisd for spam/virus scanning, you should update config files to tell mlmmj not to connect to this port anymore.

- Comment out below line in `/opt/mlmmjadmin/settings.py` and restart `mlmmjadmin` service.

  Note: it affects newly created mailing lists.

    MLMMJ_DEFAULT_PROFILE_SETTINGS.update({'smtp_port': 10027})

- Remove all `control/smtpport` file under `/var/vmail/mlmmj/<domain>/<list-name>/`. For example, for mailing list `mygroup@domain.com`, the file is `/var/vmail/mlmmj/domain.com/mygroup/control/smtpport`.

  Note: it affects all existing mailing lists.