class amavis {
    package { 'amavisd-new': }

    service { 'amavisd':
        subscribe => Package['amavisd-new'],
    }

    file { '/etc/amavisd/amavisd.conf':
        require => Package['amavisd-new'],
        content => template('amavis/amavisd.conf'),
        notify  => Service['amavisd'],
    }
}