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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.

### 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.