FAQ Proxmox Mail Gateway

Which virtualization technologies are supported?

Currently Proxmox is certified on VMware, Virtuozzo and OpenVZ. Parallels and Virtualbox is also know as working, also most KVM and XEN based solution (with Intel VT or AMD Pacifica enhanced CPU).

Which virtualization is recommend?

This depends on your requirements. If you focus on a high performance open source virtualization technologies you should take a look on OpenVZ (or the commercial version, Virtuozzo). Both are using OS virtualization which means best performance with more or less no overhead. VMware is know as very stable and comfortable to use, the testing and deployment with VMware is extremely easy as we already deliver a prebuilt virtual appliance with VMware tools included.

Is there a Proxmox Cluster available?

Yes, for details about this see Proxmox HA Cluster.

Are there any discounts for NGO/EDU/Governmental organizations?

Yes, we have very attractive pricing for such organization. Please see the price list or contact office@proxmox.com for a quote.

I am getting mail through Internet Provider Mail Server. Can I use Proxmox Mail Gateway?

No. Proxmox Mail Gateway can only be used in association with an own Mail server (e.g. Microsoft Exchange, Lotus Domino, any Linux Mail Server,..). It does not act as a POP3 proxy. But you can use Proxmox as a POP3 downloader to pull additional email account to be forwarded into your mailbox.

If my mail server fails, will Proxmox Mail Gateway store the mails for later delivery?

Proxmox Mail Gateway stores mails that can't be delivered. These mails are automatically delivered when the mail server is up again.

About 90% of my SPAM is to non-existent addresses (i.e. users who have left the Company). Is there ways to use a recipient deny or recipient allow list to instantly reject them?

If earlier valid users get emails, its necessary to inform the sender via NDR - so just not answering is not the solution. Proxmox Mail Gateway uses grey listing and Receiver Verification, both on SMTP level. Additionally you can use LDAP to fight against this - please refer to the documentation or contact a partner for help.

I am running Proxmox Mail Gateway on a MS Virtual Server/PC 2005.The Proxmox Mail Gateway is running fine but the system time is not correct?

Unfortunately that's a known problem - MS Virtual Server does not support Linux 2.6 kernels correctly. We recommend using VMware Server instead (it is also free).

Can I run Proxmox Mail Gateway on VMware?

Yes. Proxmox is tested on all VMware products, including ESX, Workstation, Server, Player.

Can I still use a backup-mx record for my mail domain?

Yes. But spammers could use the backup-mx to send mail to you. This will circumvent greylisting, because you have to exclude your backup-mx provider form greylisting in the exclusion list. All other spam filtering methods are still full functional.

I use Proxmox Mail Gateway for one domain ex. @debian.org. But we have 5 sub domains ex. @it.debian.org, @sap.debian.org ...... When I send a mail to a sub domain the server say always: Relay access denied.

Proxmox Mail Gateways must be licensed for the number of relaying domains. For example, if you run a mail server receiving e-mails for three domains (e.g. domain.net, domain.com, domain.at), then you need the three domain version.

I want to install Proxmox Mail Gateway on a PC with SATA. Is SATA supported?

Yes. The Proxmox Mail Gateway supports SATA as all newer Linux Kernel does. Proxmox 2.0 is based on 2.6.18 Kernel, Proxmox 2.1 uses already 2.6.22 with best hardware support. Please consider using a hardware raid system for best reliability.

I have the error message: Maximum time (10 sec) exceeded. Virus analyze failed:?

Those timeouts are usually no problem. There is no parameter to adjust the timeout, simply because it’s not needed when you use a reasonable fast hardware. Check our Certified Hardware Page!

Must there be any maintenance planed for keeping log-files etc. in size?

Proxmox Mail Gateway uses log rotate, so no log-file will explode in size. All syslog are kept for 7 days. Grey listing uses a database, where old entries will be deleted automatically. If you need to archive log files, please use a syslog server. All Proxmox versions support remote syslog server.

I tried to login at the console after installation, but it did not work.

Console/SSH login is restricted to the 'root' account, so you always need to login as user 'root' ATTENTION: It is strongly recommended that you change the default password after installation. The default keyboard layout is english, so please take care if you change the password on the web interface with a different keyboard layout and the you try to log in on the console.

My Proxmox Mail Gateway is unable to send mails to AOL users?

Your Proxmox Mail Gateway does not have a DNS PTR record (reverse lookup). Many mail servers do not accept mails from hosts without a correct PTR record. Add the corresponding PTR record to the DNS server and everything will work.

I noticed that there is a link to update the anti-virus definitions. Can the updates be automated?

ClamAV and Kaspersky AV database updates are already automatic. We run daemon which updates the definitions each hour, so you will always have the latest anti-virus definitions.

My firewall is in front of the mail gateway and should protect it. But which ports have to be open?

The firewall setup information is available at our documention.

We have running Proxmox Mail Gateway and we find that some mail addresses that sent mail to the internal users doesn't figures in the Mail Address Statistics?

The statistical output is filtert, for better overview. So it's normal that some mails are not shown in statistics, sender receiver. Starting from version 1.3 you can switch between filtert and not filtert statistical output (see web interface, "use advanced statistics").

When I try to run secure ldap I got the following error: Error: Can’t bind to ldap servers 'ldaps://ipaddress/' Transport endpoint is not connected what can I do?

You have to install LDAPS on your windows machine: http://support.microsoft.com/kb/321051/en-us
http://support.microsoft.com/kb/247078/en-us