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@@ -23,6 +23,8 @@ include::pmg-intro.adoc[]
 
 include::pmg-quick-start.adoc[]
 
+include::pmg-planning-deployment.adoc[]
+
 
 // Return to normal title levels.
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+Planning for Deployment
+=======================
+
+Easy integration into existing e-mail server architecture
+---------------------------------------------------------
+
+In this sample configuration, your e-mail traffic (SMTP) arrives on
+the firewall and will be directly forwarded to your e-mail server.
+
+image::images/infrasturcture_without_proxmox_big.jpg[]
+
+By using the {pmg}, all your e-mail traffic is forwarded to the
+Proxmox Mail Gateway, which filters the whole e-mail traffic and
+removes unwanted e-mails. You can manage incoming and outgoing mail
+traffic.
+
+image::images/infrasturcture_with_proxmox_big.jpg[]
+
+
+Filtering outgoing e-mails
+--------------------------
+
+Many e-mail filter solutions do not scan outgoing mails. Opposed to
+that {pmg} is designed to scan both incoming and outgoing
+e-mails. This has two major advantages:
+
+. {pmg} is able to detect viruses sent from an internal host. In many
+countries you are liable for not sending viruses to other
+people. {pmg} outgoing e-mail scanning feature is an additional
+protection to avoid that.
+
+. {pmg} can gather statistics about outgoing e-mails too. Statistics
+about incoming e-mails looks nice, but they are quite
+useless. Consider two users, user-1 receives 10 e-mails from news
+portals and wrote 1 e-mail to a person you never heard from. While
+user-2 receives 5 e-mails from a customer and sent 5 e-mails
+back. Which user do you consider more active? I am sure its user-2,
+because he communicates with your customers. {pmg} advanced address
+statistics can show you this important information. Solution which
+does not scan outgoing e-mail cannot do that.
+
+To enable outgoing e-mail filtering you just need to send all outgoing
+e-mails through your {png} (usually by specifying Proxmox as
+"smarthost" on your e-mail server - see
+xref:mail_server_config[Example mail server configuration].
+
+
+Firewall settings
+-----------------
+
+In order to pass e-mail traffic to the {pmg} you need to allow traffic
+on the SMTP the port. Our servers use the Network Time Protocol (NTP)
+for time synchronization, RAZOR, DNS, SSH, HTTP and port 8006 for the web
+based management interface.
+
+[options="header"]
+|======
+|Service |Port    |Protocol |From       |To
+|SMTP    |25      |TCP      |Proxmox    |Internet
+|SMTP    |25      |TCP      |Internet   |Proxmox
+|SMTP    |26      |TCP      |Mailserver |Proxmox
+|NTP     |123     |TCP/UDP  |Proxmox    |Internet
+|RAZOR   |2703    |TCP      |Proxmox    |Internet
+|DNS     |53      |TCP/UDP  |Proxmox    |DNS Server
+|HTTP    |80      |TCP      |Proxmox    |Internet
+|GUI/API |8006    |TCP      |Intranet   |Proxmox
+|======
+
+CAUTION: It is advisable to restrict access to the GUI/API port as far
+as possible.
+
+The outgoing HTTP connection is mainly used by virus pattern updates,
+and can be configured to use a proxy instead of a direct internet
+connection.
+
+You can use the 'nmap' utility to test your firewall settings (see
+section xref:nmap[port scans]).
+
+
+[[system_requirements]]
+System Requirements
+-------------------
+
+{pmg} needs dedicated server hardware but can also run inside a
+virtual machine on any of the following plattforms:
+
+* Proxmox VE (KVM)
+
+* VMWare vSphere™ (open-vm tools are integrated in the ISO)
+
+* Hyper-V™ (Hyper-V Linux integration tools are integrated in the ISO)
+
+* KVM (virtio drivers are integrated, great performance)
+
+* Virtual box™
+
+* Citrix XenServer™
+
+Please see http://www.proxmox.com for details.
+
+In order to get a benchmark from your hardware, just run 'pmgperf'
+after installation.
+
+
+Minimum System Requirements
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* CPU: 64bit (Intel EMT64 or AMD64)
+
+* 1 GB RAM
+
+* bootable CD-ROM-drive or USB boot support
+
+* 1024x768 capable VGA/Monitor for Installer
+
+* Hard disk 8 GB - ATA/SATA/SCSI/NVME
+
+* Ethernet Network interface card
+
+
+Recommended System Requirements
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* Multicore CPU: 64bit (Intel EMT64 or AMD64)
+
+* 4 GB RAM
+
+* bootable CD-ROM-drive or USB boot support
+
+* 1024x768 capable VGA/Monitor for Installer
+
+* 1 GBps Ethernet Network interface card
+
+* Hardware RAID1 or RAID10, Raid Controllers need write cache with
+  batteries backup module for best performance
+
+* Enterprise class SSD with power loss protection (e.g. Intel SSD DC
+  35xx/36xx/37xx)