^^&&^^

Edit File: fastmail

#!/usr/local/cpanel/3rdparty/bin/perl
# cpanel - fastmail                                  Copyright 2010 cPanel, Inc.
#                                                           All Rights Reserved.
# copyright@cpanel.net                                         http://cpanel.net
# This code is subject to the cPanel license. Unauthorized copying is prohibited

use strict;
use warnings;

use Cpanel::PwCache::Helpers             ();
use Cpanel::PwCache::Build               ();
use Cpanel::Config::LoadCpConf           ();
use Cpanel::AccessIds::ReducedPrivileges ();
use Cpanel::Config::Users                ();

my $MIN_INOTIFY_NEEDED       = 4096;
my $MIN_INOTIFY_QUEUE_NEEDED = 16384;

if ( grep( /auto|daemonize/, @ARGV ) ) {
    if ( fork() ) { exit; }
}

my $cpconf_ref = Cpanel::Config::LoadCpConf::loadcpconf_not_copy();

if ( -w '/proc/sys/fs/inotify/max_user_instances' || -w '/proc/sys/filesystem/inotify/max_user_instances' ) {
    Cpanel::PwCache::Helpers::no_uid_cache();    #uid cache only needed if we are going to make lots of getpwuid calls

Cpanel::PwCache::Build::init_passwdless_pwcache();

my $pwcache_ref = Cpanel::PwCache::Build::fetch_pwcache();

my $inotify_needed       = 128;
    my $inotify_queue_needed = 16384;
    my %CPUSERS              = map { $_ => 1 } Cpanel::Config::Users::getcpusers();

foreach my $pwref (@$pwcache_ref) {
        my $current_inotify_needed = 0;
        next if !$CPUSERS{ $pwref->[0] };
        my $homedir = (@$pwref)[7];
        my $privs = $pwref->[2] ? Cpanel::AccessIds::ReducedPrivileges->new( $pwref->[2], $pwref->[3] ) : 0;
        if ( -e $homedir . '/.cpanel/email_accounts.json' && ( stat(_) )[7] < 1000000 && open( my $email_account_fh, '<', $homedir . '/.cpanel/email_accounts.json' ) ) {
            while ( readline($email_account_fh) ) {
                $current_inotify_needed += 10 while (m/"diskused":/gs);
            }
            close($email_account_fh);

$inotify_queue_needed += $current_inotify_needed;

$current_inotify_needed += 128;

if ( $current_inotify_needed > $inotify_needed ) {
                $inotify_needed = $current_inotify_needed;
            }
        }
    }

$inotify_queue_needed += $inotify_needed;

if ( $inotify_needed < $MIN_INOTIFY_NEEDED ) {
        $inotify_needed = $MIN_INOTIFY_NEEDED;
    }

if ( $inotify_queue_needed < $MIN_INOTIFY_QUEUE_NEEDED ) {
        $inotify_queue_needed = $MIN_INOTIFY_QUEUE_NEEDED;
    }

foreach my $key ( 'fs', 'filesystem' ) {
        if ( -w '/proc/sys/' . $key . '/inotify/max_user_instances' && open( my $inotify_proc, '>', '/proc/sys/' . $key . '/inotify/max_user_instances' ) ) {
            print {$inotify_proc} $inotify_needed . "\n";
            close($inotify_proc);
        }
        if ( -w '/proc/sys/' . $key . '/inotify/max_queued_events' && open( my $inotify_proc, '>', '/proc/sys/' . $key . '/inotify/max_queued_events' ) ) {
            print {$inotify_proc} $inotify_queue_needed . "\n";
            close($inotify_proc);
        }

}

if ( $cpconf_ref->{'mailserver'} eq 'dovecot' ) {
        if ( open( my $fastmail_fh, '>', '/var/cpanel/fastmail' ) ) {
            print {$fastmail_fh} '2';
            close($fastmail_fh);
        }
    }
    else {
        unlink('/var/cpanel/fastmail');
    }

}
else {
    require Cpanel::CachedDataStore;
    my $conf_dir        = '/var/cpanel/conf/dovecot';
    my $conf_file       = $conf_dir . '/main';
    my $dovecot_conf_hr = {};

# Usage is safe as we own the dir and file
    $dovecot_conf_hr = Cpanel::CachedDataStore::fetch_ref($conf_file) if ( -e $conf_file );

my $restart = 0;
    if ( !exists $dovecot_conf_hr->{'mailbox_idle_check_interval'} ) {
        $dovecot_conf_hr->{'mailbox_idle_check_interval'} = 30;
        $restart = 1;
    }

if ($restart) {
        mkdir $conf_dir, 0755 if !-e $conf_dir;

# Usage is safe as we own the dir and file
        Cpanel::CachedDataStore::store_ref( $conf_file, $dovecot_conf_hr );
        system('/usr/local/cpanel/scripts/builddovecotconf');
        system('/usr/local/cpanel/scripts/restartsrv_dovecot');
    }

if ( $cpconf_ref->{'mailserver'} eq 'dovecot' ) {
        if ( open( my $fastmail_fh, '>', '/var/cpanel/fastmail' ) ) {
            print {$fastmail_fh} '1';
            close($fastmail_fh);
        }
    }
    else {
        unlink('/var/cpanel/fastmail');
    }
}