[Klug-general] Mail Servers

[David Halliday]

I presume that you are using something more like open VZ  or another kernel
based virtualization so this warning is possibly not appropriate to your
configuration.

However as a word of warning from experience, I once set up using VMware an
SMTP machine for a business (long story why this was the set-up chosen first
time around that I was asked to implement). Disk IO stuff (and other things)
can be very slow under virtualization and I quickly found that my mail
server (which was sending out business communication with hundreds of
customers) suffered performance issues because of disk virtualization.

This wasn't a problem when I rebuilt everything under OpenVZ, just VM Ware.

On 17 December 2010 13:42, Julia Freeman <klug at quixotic.org.uk> wrote:

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> On Fri, Dec 17, 2010 at 12:36:57PM +0000, Peter Childs wrote:
> >
> > Thats what I'm doing currently. (Except I'm using Exim) the issue is that
> > certainly 1and1 limit you to 1 email every 10 seconds (which is not
> really
> > very many for a peak load). I've seen similar limits from most other ISPs
> >
> > Trying to get your reverse DNS to match is a pain, Would using a shared
> > hosting supplier fix this issue?
> >
> > My reading is that part of the problem is the need for SPF records.....
>
> Never under estimate the suitability of a virtual machine in a datacenter
> running postfix/exim etc... with the correct dns settings as a machine to
> send mail from... (trying for the not so blatent plug...)
>
> J
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