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Installation and configuration - CentOS 8.4
Overview
This is a pure Activesync implementation example, no Openchange.
Samba Active Directory integrated with Pam via Winbind makes system aware of Active directory users,
instead of configuring LDAP within Dovecot and Sendmail.
Autodiscover via PHP and SSL via Certbot.
Outlook 2013/2016/2019 clients connect natively on desktop devices.
Apple and Android clients connect natively on mobile devices.
Notes
New CentOS 8.4 installation with package selection "Minimal Install".
Internet Domain : example.com
Internet DNS records required for mail.example.com and autodiscover.example.com to
point to the systems public IP address and firewall to allow TCP 80/443.
Active Directory Domain : example.local
Samba username must match email address username.
Active Directory user john.doe@example.local will receive email on john.doe@example.com
In production this config is successfully deployed to serve 40 desktop Clients and 40 mobile clients
with 8G memory and x1 CPU.
Howto
Dnf Repositories
- Configure DNF
sed -i "s/^enabled=.*$/enabled=1/" /etc/yum.repos.d/CentOS-Linux-AppStream.repo sed -i "s/^enabled=.*$/enabled=1/" /etc/yum.repos.d/CentOS-Linux-Extras.repo sed -i "s/^enabled=.*$/enabled=1/" /etc/yum.repos.d/CentOS-Linux-PowerTools.repo sed -i "s/^enabled=.*$/enabled=1/" /etc/yum.repos.d/CentOS-Linux-Devel.repo sed -i "s/^gpgcheck=.*$/gpgcheck=0/" /etc/yum.conf sed -i "s/^gpgcheck=.*$/gpgcheck=0/" /etc/dnf/dnf.conf
- Configure Sogo Repo.
echo "[sogo] name=Inverse SOGo Repository baseurl=https://packages.inverse.ca/SOGo/nightly/5/rhel/8/x86_64 gpgcheck=0 enabled=1" > /etc/yum.repos.d/sogo.repo
- Configure EPEL Repo.
dnf -y install epel-release
- Configure Custom Repo.
dnf -y install createrepo mkdir -p /tmp/repo cd /tmp/repo wget https://forensics.cert.org/centos/cert/8/x86_64/python3-crypto-2.6.1-28.1.el8.x86_64.rpm createrepo ./ echo "[Custom] name=CentOS-\$releasever - Custom baseurl=file:/tmp/repo/ enabled=1 gpgckeck=0" > /etc/yum.repos.d/CentOS-Custom.repo
- Prevent rebuilt Samba from being replaced.
sed -i "/\[baseos\]/ a\exclude=samba*" /etc/yum.repos.d/CentOS-Linux-BaseOS.repo
Custom Packages
- Some packages to be rebuilt from src rpm's as they are required for Samba rebuild.
dnf -y group install "Development Tools" rm -rf /root/rpmbuild
- Rebuild Libtalloc and add to custom Repo.
dnf -y install doxygen rpmbuild --rebuild https://vault.centos.org/centos/8-stream/BaseOS/Source/SPackages/libtalloc-2.3.2-1.el8.src.rpm cp /root/rpmbuild/RPMS/x86_64/* /tmp/repo cd /tmp/repo createrepo ./ rm -rf /root/rpmbuild dnf clean all
- Rebuild Libldb and add to custom Repo.
rpmbuild --rebuild https://vault.centos.org/centos/8-stream/BaseOS/Source/SPackages/libldb-2.3.0-2.el8.src.rpm cp /root/rpmbuild/RPMS/x86_64/* /tmp/repo cd /tmp/repo createrepo ./ rm -rf /root/rpmbuild dnf clean all
- Rebuild Samba to include Active Directory and add to custom Repo.
dnf -y install avahi-devel bind cups-devel glusterfs-api-devel gpgme-devel \ jansson-devel ldb-tools libacl-devel libuuid-devel lmdb ncurses-devel \ pam-devel perl-Parse-Yapp tdb-tools xfsprogs-devel readline-devel \ systemd-devel libarchive-devel libldb-devel libnsl2-devel libtasn1-tools perl-Archive-Tar \ perl-ExtUtils-MakeMaker python3-devel python3-iso8601 python3-markdown rpcsvc-proto-devel krb5-devel \ krb5-server python3-ldb-devel quota-devel libaio-devel libcap-devel libicu-devel quota-devel perl-Test-Simple \ dbus-devel e2fsprogs-devel libcmocka-devel openldap-devel popt-devel python3-tdb python3-tevent rpcgen \ python3-talloc-devel perl-File-Path perl-JSON-PP rpmbuild --rebuild --with=dc https://vault.centos.org/centos/8-stream/BaseOS/Source/SPackages/samba-4.14.5-2.el8.src.rpm cp /root/rpmbuild/RPMS/x86_64/* /tmp/repo cp /root/rpmbuild/RPMS/noarch/* /tmp/repo cd /tmp/repo/ createrepo ./ rm -rf /root/rpmbuild dnf clean all
Samba Active Directory
- Install Samba.
dnf -y install samba-dc tdb-tools samba-winbind-clients cups bind bind-utils samba-dc-bind-dlz dnf -y remove bind-chroot
- Ensure no stale config.
rm -rf /etc/samba/smb.conf rm -rf /etc/krb5.conf rm -rf /var/lib/samba/private/* rm -rf /var/lib/samba/sysvol/* rm -rf /var/lib/samba/bind-dns/*
- Hostname must be as in Active Directory before provision.
hostname dc.example.local
- Provision Active Directory.
samba-tool domain provision --function-level=2008_R2 --realm=example.local --domain=EXAMPLE --adminpass='Password1' --server-role='dc' --dns-backend=BIND9_DLZ --option="interfaces=lo eth0" --option="bind interfaces only=yes"
- Configure Kerberos.
cp /var/lib/samba/private/krb5.conf /etc
If you are migrating from an older Samba that used Heimdal Kerberos create MIT Kerberos KDC file /var/lib/samba/private/kdc.conf
[kdcdefaults] kdc_ports = 88 kdc_tcp_ports = 88 kadmind_port = 464 [realms] EXAMPLE.LOCAL = { } example.local = { } EXAMPLE = { } [dbmodules] db_module_dir = /usr/lib64/krb5/plugins/kdb EXAMPLE.LOCAL = { db_library = samba } example.local = { db_library = samba } EXAMPLE = { db_library = samba } [logging] kdc = FILE:/var/log/samba/mit_kdc.log admin_server = FILE:/var/log/samba/mit_kadmin.logChange home folder path. (new default hidden setting in smb.conf : template homedir = /home/%D@%U)
sed -i '/workgroup =/ a\\ttemplate homedir = /home/%D/%U' /etc/samba/smb.conf
- Dynamic DNS updates for PC's joined to domain.
sed -i '/template homedir =/ a\\tdsdb:schema update allowed = true' /etc/samba/smb.conf
- Sogo by default uses LDAP not LDAPS.
sed -i '/template homedir =/ a\\tldap server require strong auth = no' /etc/samba/smb.conf
- Configure Bind.
sed -i "/listen-on port 53/s/127.0.0.1/any/" /etc/named.conf sed -i "/allow-query/s/localhost/any/" /etc/named.conf sed -i '/allow-query/ a\\ttkey-gssapi-keytab "/var/lib/samba/bind-dns/dns.keytab";' /etc/named.conf sed -i '/allow-query/ a\\tallow-transfer { any; };' /etc/named.conf sed -i '/tkey-gssapi-keytab/ a\\tforwarders { 8.8.8.8; };' /etc/named.conf sed -i '/forwarders/ a\\tforward first;' /etc/named.conf sed -i '/include "\/etc\/named.rfc1912.zones";/d' /etc/named.conf sed -i '/include "\/etc\/named.root.key";/d' /etc/named.conf sed -i "\$ainclude \"\/var\/lib\/samba\/bind-dns\/named.conf\";" /etc/named.conf sed -i '/zone "." IN {/,+4d' /etc/named.conf echo 'KRB5RCACHETYPE="none"' >> /etc/sysconfig/named - If you are upgrading from an older Samba that provisioned Bind DLZ in : /var/lib/samba/private
mkdir -p /var/lib/samba/bind-dns/dns samba_upgradedns --dns-backend=BIND9_DLZ sed -i "s/samba\/private/samba\/bind-dns/g" /etc/named.conf
- Configure system DNS lookup via local Bind.
echo "search example.local nameserver 127.0.0.1" > /etc/resolv.conf
- Enable and start services.
systemctl enable named --now systemctl enable cups --now systemctl enable samba --now
- Configure Active Directory.
samba-tool user setexpiry administrator --noexpiry
- Verify Config.
ping example.local wbinfo -g wbinfo -u dnf -y install samba-client smbclient -L localhost -UAdministrator smbclient //localhost/netlogon -UAdministrator -c 'ls'
Users
- Configure PAM.
sed -i "/^passwd/s/$/ winbind/" /etc/nsswitch.conf sed -i "/^group/s/$/ winbind/" /etc/nsswitch.conf sed -i "/auth required pam_env.so/ a\auth sufficient pam_winbind.so try_first_pass" /etc/pam.d/system-auth sed -i "/account sufficient pam_succeed_if.so/ a\account \[default=bad success=ok user_unknown=ignore\] pam_winbind.so" /etc/pam.d/system-auth sed -i "/password sufficient pam_unix.so/ a\password sufficient pam_winbind.so use_authtok" /etc/pam.d/system-auth sed -i "/session required pam_unix.so/ a\session optional pam_winbind.so" /etc/pam.d/system-auth sed -i "/auth required pam_env.so/ a\auth sufficient pam_winbind.so try_first_pass" /etc/pam.d/password-auth sed -i "/account sufficient pam_succeed_if.so/ a\account \[default=bad success=ok user_unknown=ignore\] pam_winbind.so" /etc/pam.d/password-auth sed -i "/password sufficient pam_unix.so/ a\password sufficient pam_winbind.so use_authtok" /etc/pam.d/password-auth sed -i "/session required pam_unix.so/ a\session optional pam_winbind.so" /etc/pam.d/password-auth
- Verify Config.
getent passwd administrator
- Configure mailbox home folders.
mkdir /home/EXAMPLE chown dovecot /home/EXAMPLE chgrp "Domain Users" /home/EXAMPLE chmod 770 /home/EXAMPLE
- Enable SSH login for Active Directory users, e.g. roundcube mail ssh vacation plugin.
dnf -y install oddjob-mkhomedir sed -i "/-session optional pam_systemd.so/ a\session optional pam_oddjob_mkhomedir.so umask=0077" /etc/pam.d/password-auth-ac sed -i "/-session optional pam_systemd.so/ a\session optional pam_oddjob_mkhomedir.so umask=0077" /etc/pam.d/system-auth-ac systemctl enable oddjobd --now sed -i '/dsdb:schema update allowed = true/ a\\ttemplate shell = /bin/bash' /etc/samba/smb.conf
- Active Directory user home folder, for Pc's joined to domain.
echo " [users] comment = User Homes path = /data/users browseable = yes read only = no public = yes" >> /etc/samba/smb.conf mkdir /data cd /data mkdir users chmod 710 users chgrp "Domain Users" users systemctl restart samba
- Creating users.
samba-tool user create john.doe 'Password1' samba-tool user setexpiry john.doe --noexpiry mkdir /data/users/john.doe chmod 700 /data/users/john.doe chown john.doe /data/users/john.doe
- Updating users. ( mail field required for auth via email and Global Address List lookups )
dnf -y install openldap-clients echo "dn: cn=john.doe,cn=Users,dc=example,dc=local changetype: modify add: mail mail: john.doe@example.com - add: givenName givenName: John - add: sn sn: Doe - add: displayName displayName: John Doe - add: HomeDirectory HomeDirectory: \\\\dc\\users\\john.doe - add: HomeDrive HomeDrive: Z:" > newuser.ldif ldapadd -f newuser.ldif -x -w "Password1" -D cn=Administrator,cn=Users,dc=example,dc=local
- Delete User
samba-tool user delete john.doe rm -rf /home/EXAMPLE/john.doe rm -rf /data/users/john.doe sogo-tool remove john.doe
Sendmail MTA
- Install.
dnf -y remove postfix dnf -y install sendmail sendmail-cf
- Set Internet Hostname.
hostname mail.example.com echo mail.example.com > /etc/hostname sed -i "/^127.0.0.1/s/ localhost / mail.example.com mail localhost /g" /etc/hosts
- Accept connections on port 25 and locaclly deliver for internet domain : example.com
sed -i "s/^DAEMON_OPTIONS(\`Port=smtp,Addr=127.0.0.1.*$/DAEMON_OPTIONS(\`Port=smtp, Name=MTA\')dnl/" /etc/mail/sendmail.mc echo example.com >> /etc/mail/local-host-names
- If you use a relay server to deliver outgoing email, eg. smtp.example.com
sed -i '/SMART_HOST/s/dnl define/define/g' /etc/mail/sendmail.mc sed -i "s/^define(\`SMART_HOST.*$/define(\`SMART_HOST\', \`smtp.example.com\')dnl/" /etc/mail/sendmail.mc
- Config Maildir instead of Mailbox, improved I/O, etc ..
echo "DEFAULT=\"\$HOME/mail/\" MAILDIR=\"\$HOME/mail/\" ORGMAIL=\"\$HOME/mail/\" #LOGFILE=\"/var/log/procmail.log\"" > /etc/procmailrc sed -i "s/^MAIL_DIR.*$/MAIL_DIR\tmail/" /etc/login.defs sed -i 's/MAIL="\/var\/spool\/mail\/$USER"/MAIL="$HOME\/mail"/' /etc/profile sed -i "s/^CREATE_MAIL_SPOOL=.*$/CREATE_MAIL_SPOOL=no/" /etc/default/useradd
- Enable and start Services.
systemctl enable sendmail --now
Dovecot
- Install.
dnf -y install dovecot
- Basic config.
sed -i "s/^#listen =.*$/listen = \*/" /etc/dovecot/dovecot.conf sed -i "s/^#mail_plugins =.*$/mail_plugins = mail_log notify/" /etc/dovecot/conf.d/10-mail.conf sed -i "s/^#mail_privileged_group =.*$/mail_privileged_group = mail/" /etc/dovecot/conf.d/10-mail.conf sed -i "s/^#disable_plaintext_auth =.*$/disable_plaintext_auth = no/" /etc/dovecot/conf.d/10-auth.conf sed -i "s/^ssl =.*$/ssl = yes/" /etc/dovecot/conf.d/10-ssl.conf
- Maildir Delivery
sed -i "s/^#mail_location =.*$/mail_location = maildir:~\/mail/" /etc/dovecot/conf.d/10-mail.conf
- Auth via email account.
sed -i "s/^#auth_username_format =.*$/auth_username_format = %n/" /etc/dovecot/conf.d/10-auth.conf
- Auto Folder Creation
sed -i "s/mailbox Junk/mailbox \"Junk E-Mail\"/" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "s/mailbox Trash/mailbox \"Deleted Items\"/" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "s/mailbox \"Sent Messages\"/mailbox \"Sent Items\"/" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "/mailbox Drafts/ a\ auto = subscribe" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "/mailbox \"Junk E-Mail\"/ a\ auto = subscribe" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "/mailbox \"Deleted Items\"/ a\ auto = subscribe" /etc/dovecot/conf.d/15-mailboxes.conf sed -i "/mailbox \"Sent Items\"/ a\ auto = subscribe" /etc/dovecot/conf.d/15-mailboxes.conf
- Using Maildir, Mailbox's are almost always bigger than 2G, need to make Outlook sync.
sed -i "s/#imap_max_line_length = 64k/imap_max_line_length = 4M/" /etc/dovecot/conf.d/20-imap.conf sed -i "s/^#default_process_limit =.*$/default_process_limit = 1024/" /etc/dovecot/conf.d/10-master.conf sed -i "s/^#default_client_limit =.*$/default_client_limit = 5120/" /etc/dovecot/conf.d/10-master.conf
- Enable and start Services.
systemctl enable dovecot --now
Apache Web Server
- Install
dnf -y install httpd mod_ssl php php-fpm
- Basic Config.
echo "<VirtualHost _default_:80> DocumentRoot /var/www/html </VirtualHost>" > /etc/httpd/conf.d/00-default.conf sed -i "s/^listen.acl_users = .*$/listen.acl_users = apache/" /etc/php-fpm.d/www.conf - Redirect default Apache home to HTTPS Sogo.
echo '<?php $Hostname = gethostname(); header("Location: https://$Hostname/SOGo"); ?>' > /var/www/html/index.php - Create Auto Discover folder.
mkdir -p /var/www/autodiscover/autodiscover
Create Auto Discover PHP file /var/www/autodiscover/autodiscover/autodiscover.php
<?php /* Open Source Autodiscover implementation in PHP. Version: 1.0 Allows auto configuration of ActiveSync and Outlook (or any other MUA that has autodiscover support). */ $Hostname = gethostname(); /*** Begin Configuration ***/ // ActiveSync URL. $_CONFIG['MobileSync']['Url'] = "https://$Hostname/Microsoft-Server-ActiveSync"; // For other supported protocols and more protocol settings, see: // http://technet.microsoft.com/en-us/library/cc511507.aspx // Get contents of request made to Autodiscover. $request = file_get_contents("php://input"); // XML document heading. header("Content-Type: text/xml"); echo "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"; // Get the schema from the request. preg_match("/\<AcceptableResponseSchema\>(.*?)\<\/AcceptableResponseSchema\>/", $request, $schema); // Determine the type of device requesting Autodiscover. if (preg_match("/\/mobilesync\//", $schema[1])) { // Mobile device. preg_match("/\<EMailAddress\>(.*?)\<\/EMailAddress\>/", $request, $email_address); ?> <Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006"> <Response xmlns="<?php echo $schema[1]; ?>"> <Culture>en:en</Culture> <User> <DisplayName><?php echo $email_address[1]; ?></DisplayName> <EMailAddress><?php echo $email_address[1]; ?></EMailAddress> </User> <Action> <Settings> <Server> <Type>MobileSync</Type> <Url><?php echo $_CONFIG['MobileSync']['Url']; ?></Url> <Name><?php echo $_CONFIG['MobileSync']['Url']; ?></Name> </Server> </Settings> </Action> </Response> </Autodiscover> <?php } else if (preg_match("/\/outlook\//", $schema[1])) { // MUA (mail client). ?> <Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006"> <Response xmlns="<?php echo $schema[1]; ?>"> <Account> <AccountType>email</AccountType> <Action>settings</Action> <?php // Loop through each configured protocol. while(list($protocol, $settings) = each($_CONFIG)) { // Skip ActiveSync protocol. //if ($protocol == "MobileSync") continue; ?> <Protocol> <Type><?php echo $protocol; ?></Type> <?php // Loop through each setting for this protocol. while(list($setting, $value) = each($settings)) { echo "\t\t\t\t\t\t\t<$setting>$value</$setting>\n"; } ?> </Protocol> <?php } ?> </Account> </Response> </Autodiscover> <?php } else { // Unknown. list($usec, $sec) = explode(' ', microtime()); ?> <Autodiscover xmlns="http://schemas.microsoft.com/exchange/autodiscover/responseschema/2006"> <Response> <Error Time="<?php echo date('H:i:s', $sec) . substr($usec, 0, strlen($usec) - 2); ?>" Id="2477272013"> <ErrorCode>600</ErrorCode> <Message>Invalid Request</Message> <DebugData /> </Error> </Response> </Autodiscover> <?php } ?>- Virtual Host.
echo "Alias /autodiscover/autodiscover.xml /var/www/autodiscover/autodiscover/autodiscover.php <Directory /var/www/autodiscover> Options Indexes FollowSymLinks AllowOverride None Require all granted </Directory> <VirtualHost *:443> SSLEngine on SSLCertificateFile /etc/pki/tls/certs/mail.example.com.crt SSLCertificateKeyFile /etc/pki/tls/private/mail.example.com.key DocumentRoot /var/www/autodiscover ServerName autodiscover.example.com RewriteEngine On RewriteMap lc int:tolower RewriteCond %{REQUEST_URI} [A-Z] RewriteRule (.*) \${lc:\$1} [R=301,L] ErrorLog logs/autodiscover_error_log CustomLog logs/autodiscover_access_log common </VirtualHost>" > /etc/httpd/conf.d/autodiscover.conf - Certbot for SSL.
dnf -y install certbot mod_ssl
- Create Certificate, Ensure Ports 80 and 443 are reachable on this host from the Internet on the DNS hostnames.
systemctl stop httpd certbot certonly --standalone -d mail.example.com -d autodiscover.example.com
- Link Certificate to Apache.
ln -s /etc/letsencrypt/live/mail.example.com/cert.pem /etc/pki/tls/certs/mail.example.com.crt ln -s /etc/letsencrypt/live/mail.example.com/privkey.pem /etc/pki/tls/private/mail.example.com.key sed -i "s/localhost/mail.example.com/g" /etc/httpd/conf.d/ssl.conf
- Schedule Auto Renewal as Letsencrypt is only valid for 3 months.
echo "# Letsencrypt automatic SSL certicate renewal SHELL=/bin/bash PATH=/sbin:/bin:/usr/sbin:/usr/bin MAILTO= HOME=/ @daily root systemctl stop httpd;certbot renew --quiet;systemctl start httpd" > /etc/cron.d/letsencrypt
- Enable and start services.
systemctl enable httpd --now systemctl enable php-fpm --now
Sogo
- Install.
dnf -y install sogo sope49-gdl1-mysql sogo-tool sogo-activesync libwbxml memcached
- Configure Apache.
sed -i "s/#ProxyPass \/Microsoft-Server-ActiveSync/ProxyPass \/Microsoft-Server-ActiveSync/" /etc/httpd/conf.d/SOGo.conf sed -i "s/# http:\/\/127.0.0.1:20000\/SOGo\/Microsoft-Server-ActiveSync/ http:\/\/127.0.0.1:20000\/SOGo\/Microsoft-Server-ActiveSync/" /etc/httpd/conf.d/SOGo.conf sed -i "s/# retry=60 connectiontimeout=5 timeout=360/ retry=60 connectiontimeout=5 timeout=3600/" /etc/httpd/conf.d/SOGo.conf
- Configure Sogo Daemon
sed -i "s/# PREFORK=3/PREFORK=90/" /etc/sysconfig/sogo
- Prepare Database
dnf -y install mysql-server sed -i "/\[mysqld\]/ a\collation-server = utf8mb4_unicode_ci" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[mysqld\]/ a\character-set-server = utf8mb4" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[mysqld\]/ a\character-set-client-handshake = FALSE" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[mysqld\]/ a\max_allowed_packet = 128M" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[mysqld\]/ a\max_connections = 256" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[mysqld\]/ a\binlog_expire_logs_seconds=604800" /etc/my.cnf.d/mysql-server.cnf sed -i "/\[client\]/ a\default-character-set = utf8mb4" /etc/my.cnf.d/client.cnf sed -i "/\[mysql\]/ a\default-character-set = utf8mb4" /etc/my.cnf.d/mysql-clients.cnf systemctl enable mysqld --now echo 'CREATE DATABASE sogo /*!40101 CHARACTER SET utf8 COLLATE utf8_general_ci */;' > mysql.createdb.sql echo "CREATE USER 'sogo' IDENTIFIED BY 'sogo';" >> mysql.createdb.sql echo "GRANT ALL PRIVILEGES ON sogo.* TO sogo;" >> mysql.createdb.sql mysql < mysql.createdb.sql rm -rf mysql.createdb.sql
Configure /etc/sogo/sogo.conf
{ MySQL4Encoding = "utf8mb4"; SOGoProfileURL = "mysql://sogo:sogo@127.0.0.1:3306/sogo/sogo_user_profile"; OCSFolderInfoURL = "mysql://sogo:sogo@127.0.0.1:3306/sogo/sogo_folder_info"; OCSSessionsFolderURL = "mysql://sogo:sogo@127.0.0.1:3306/sogo/sogo_sessions_folder"; SOGoLanguage = English; SOGoTimeZone = Africa/Johannesburg; SOGoMailDomain = example.com; SOGoIMAPServer = imap://127.0.0.1:143; SOGoDraftsFolderName = "Drafts"; SOGoSentFolderName = "Sent Items"; SOGoTrashFolderName = "Deleted Items"; SOGoJunkFolderName = "Junk E-Mail"; SOGoMailingMechanism = smtp; SOGoSMTPServer = smtp://127.0.0.1:25; SOGoSuperUsernames = (support); SOGoPageTitle = SOGo; SOGoVacationEnabled = YES; SOGoForwardEnabled = YES; SOGoSieveScriptsEnabled = YES; SOGoSieveServer = sieve://127.0.0.1:4190; WOWorkersCount = 90; WOWatchDogRequestTimeout = 60; SOGoMaximumPingInterval = 3540; SOGoMaximumSyncInterval = 3540; SOGoInternalSyncInterval = 60; SOGoMaximumSyncResponseSize = 4096; SxVMemLimit = 512; NGMimeBuildMimeTempDirectory = "/var/tmp"; SOGoUserSources = ( { type = ldap; CNFieldName = displayName; IDFieldName = cn; UIDFieldName = sAMAccountName; baseDN = "cn=Users,dc=example,dc=local"; bindDN = "cn=Administrator,cn=Users,dc=example,dc=local"; bindFields = (sAMAccountName, mail); bindPassword = "Password1"; canAuthenticate = YES; displayName = "Shared Addresses"; hostname = "dc.example.local"; id = public; isAddressBook = YES; port = 389; } ); }- Session cleanup.
sed -i "/expire-sessions/s/^#//" /etc/cron.d/sogo
- Enable and start services.
systemctl enable memcached --now systemctl enable sogod --now
- Monitoring
tail -f /var/log/sogo/sogo.log sogo-tool manage-eas listdevices john.doe sogo-tool manage-eas resetdevice john.doe D403113BAAB54B9B9DB34B643EC9BD76 sogo-tool manage-eas listfolders john.doe D403113BAAB54B9B9DB34B643EC9BD76 sogo-tool manage-eas resetfolder john.doe 139804EBDF92456789DF25B3818FC274+foldera82bec1250479155c5750000c0f2a9f1
- Autoreply - Out of Office
dnf -y install dovecot-pigeonhole sed -i 's/#mail_temp_dir = .*$/mail_temp_dir = \/var\/tmp/' /etc/dovecot/conf.d/10-mail.conf sed -i 's/#protocols = $protocols sieve/protocols = $protocols sieve/' /etc/dovecot/conf.d/20-managesieve.conf sed -i "s/#lda_mailbox_autocreate = no/lda_mailbox_autocreate = yes/" /etc/dovecot/conf.d/15-lda.conf sed -i "s/#lda_mailbox_autosubscribe = no/lda_mailbox_autosubscribe = yes/" /etc/dovecot/conf.d/15-lda.conf sed -i "/^MAILER(procmail)/ i\FEATURE(\`local_procmail', \`\/usr\/libexec\/dovecot\/dovecot-lda',\`\/usr\/libexec\/dovecot\/dovecot-lda -d \$u')" /etc/mail/sendmail.mc sed -i "/^MAILER(procmail)/ i\MODIFY_MAILER_FLAGS(\`LOCAL', \`-f')" /etc/mail/sendmail.mc echo "define(\`confDONT_BLAME_SENDMAIL',\`forwardfileingroupwritabledirpath')" >> /etc/mail/sendmail.mc sed -i "/update-autoreply/s/^#//" /etc/cron.d/sogo
- Dovecot as LDA doesnt like root
useradd -g 100 support echo Password1 | passwd --stdin support echo -e "root:\t\tsupport" >> /etc/aliases newaliases
Fail2ban
- Install.
dnf -y install fail2ban whois
- Configure.
echo '[DEFAULT] ignoreip = 127.0.0.1/8 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 bantime = 172800 findtime = 3600 maxretry = 3 [sogo-auth] enabled = true filter = sogo-auth action = iptables-multiport[name=sogo-auth, port="https", protocol=tcp] logpath = /var/log/sogo/sogo.log' > /etc/fail2ban/jail.local
- Enable and start services.
systemctl enable fail2ban --now
Other
- You might want to disable SElinux.
setenforce 0 sed -i "s/SELINUX=enforcing/SELINUX=disabled/g" /etc/selinux/config
- Configure the default local firewall to allow connections or stop for fault finding.
systemctl stop firewalld
- Manage Samba from Windows 10 PC joined to domain with Remote Server Administration Tools :
Start / Settings / Apps / Optional Features / RSAT - Active Directory Domain Services
- Fix sysvol rights.
samba-tool ntacl sysvolreset
- Upgrade Schema.
dnf install python3-markdown patch samba-tool domain schemaupgrade samba-tool domain functionalprep --function-level=2012_R2
- Allow NT File Rights edit from MMC.
net rpc rights grant "EXAMPLE\administrator" SeDiskOperatorPrivilege -U "EXAMPLE\administrator" net rpc rights list privileges SeDiskOperatorPrivilege -U "EXAMPLE\administrator"
- Outlook Autodiscover Quirks.
Outlooks Setup Wizard will not prompt for password when setting up an email account if the PC is joined to the Samba domain. "Your Name" will be obtained from the "Display Name" field in Active directory and the "E-Mail Address" will be obtained form the "mail" field in Active Directory. Workaround : When adding an email account, in the "Auto Account Setup" wizard, edit the "E-Mail Address" field and change a character, the password prompt will now be available for you to supply the password. Newer Outlook will try and find mailbox at 365 or where root website is hosted. Create a .reg file and import the following settings to avoid this : Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\AutoDiscover] "ExcludeExplicitO365Endpoint"=dword:00000001 "ExcludeHttpsRootDomain"=dword:00000001 [HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Autodiscover] "ExcludeExplicitO365Endpoint"=dword:00000001 "ExcludeHttpsRootDomain"=dword:00000001 [HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\16.0\Outlook\setup] "DisableOffice365SimplifiedAccountCreation"=dword:00000001