Thanks Stan and Pavel for your responses.
On Tue, Jun 12, 2012 at 2:39 PM, Stan Hoeppner <s...@hardwarefreak.com>wrote: > On 6/12/2012 1:54 AM, santosh malavade wrote: > > > I am in the process of installing mailgateway server. > > Which option of installation should I use ? Installing from source code > or > > precompiled packages. > > First, what message load are you designing this gateway to handle? One > msg/sec? Ten msgs/sec? How many downstream mailboxes? Do you plan to > use a local address table, remote LDAP, RAV? > This server will be accepting messages for nine domains. During peak hours 25msg/sec. 5000 Users. Yes, relay recipient maps will point to local hash file. The internal servers will use LDAP for getting the mailbox location. I did not understand what is RAV means. Pls. elaborate. > > > The red hat currently provides package > > postfix-2.6.6-2.2.el6_1:2.x86_64< > https://rhn.redhat.com/rhn/software/packages/details/Overview.do?pid=633415 > > > > In your case I'd recommend sticking with the RHEL Postfix package unless > there is a specific feature you know you need that's only available in a > later release. > > > OS : RHEL 6 > > RAM : 8 GB > It is always mentioned to move to the latest version of the software, considering the features the latest release provides. I wanted to understand, when the current stable release of POSTFIX will be provided by RHEL as package. > > 8GB RAM is overkill for an smtp gateway. 1GB is usually more than > sufficient. More important is disk IOPS capability. > I was considering 4GB. However, this is what is given to me. :-) We may consider awstat on the same machine. Disk IOPS - need to understand this. I will spend some time on it. > > > Hard Disk : 500 GB > > And it appears you have a 7.2k RPM single disk. This should be > sufficient if your message rate is ~30/sec or less. And 500GB is far > more than sufficient for your spool. 10GB of spool space is usually far > more than sufficient for a light duty gateway. I'd recommend adding > another one and mirror the two for redundancy. > > are we saying /var should be 10 GB and RAID configuration. > > CPU : Intel Xenon 2.4 GHz > > This should be fine. An smtp spool is disk bound, not CPU bound. In > the absence of horribly misconfigured content filtering software this > CPU should be able to handle hundreds of msgs/sec without breaking a sweat. > we will not be using content filtering > > > How do I go about partitioning ? Will there be any benefits of having > > Logical Partitions ? Will it have impact on the performance ? > > Are you referring to LVM? It will gain you nothing on an SMTP gateway > and simply increase complexity needlessly. The RHEL default partition > scheme should be fine, unless it gives you less than 20GB for /var. > > I have recently come across a vendor who was insisting non LVM based configuration siting performance reasons. Hence, I thought checking it with the list. I personally feel the LVM provides the flexibility of resizing. Is there any detailed documentation ? Rgds, Santosh > -- > Stan >
