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123-reg , donhost and hosting own mail server

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Adam Davies

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Jun 3, 2004, 7:42:44 PM6/3/04
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I seem to keep going over my bandwidth allowance on my dedicated server
with my host (donhosts) and want to try and reduce it down a bit, i
always register my domain names with 123-reg and change the nameservers
to those of my dedicated server.

One way I was thinking of reducing bandwidth is hosting my own mail
server which I currently do but it collects the mail from pop accounts
on my dedicated server rather than email sent directly to my own mail
server.

My question is this, is there anyway I can seperate mail and web traffic
in the domains so that web requests goto my hosted dedicated server and
mail goes direct to my mail server that I have in my office????

Alan J. Wylie

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Jun 4, 2004, 2:45:46 AM6/4/04
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On Fri, 4 Jun 2004 00:42:44 +0100, Adam Davies <corn...@hotmail.com> said:

> My question is this, is there anyway I can seperate mail and web
> traffic in the domains so that web requests goto my hosted dedicated
> server and mail goes direct to my mail server that I have in my
> office????

Web uses A records, mail should use MX records.

For redundancy, you should have more than one mail server, on separate
physical networks/power supplies (and remember that all BT ADSL lines
in a region can fail simultaneously).

There are ISPs[1] that will provide backup secondary MX for you.

Note that 123-Reg sets up an A record for the bare domain (without a
www part) by default, and I can see no way to configure it otherwise.

The only issue you will find is that despite RFC2821 section 5

| If one or more MX RRs are found for a given
| name, SMTP systems MUST NOT utilize any A RRs associated with that
| name unless they are located using the MX RRs; the "implicit MX" rule
| above applies only if there are no MX records present. If MX records
| are present, but none of them are usable, this situation MUST be
| reported as an error.

I have seen broken MTA's trying to deliver to the A record associated
with the bare domain, if the server associated with the MX record is
unreachable.

[1] e.g. http://www.gradwell.com/dns/secondary-hosting.php

--
Alan J. Wylie http://www.wylie.me.uk/
"Perfection [in design] is achieved not when there is nothing left to add,
but rather when there is nothing left to take away."
-- Antoine de Saint-Exupery

Adam Davies

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Jun 4, 2004, 3:25:55 AM6/4/04
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In article <ufekovo...@wylie.me.uk>, al...@wylie.me.uk says...

> On Fri, 4 Jun 2004 00:42:44 +0100, Adam Davies <corn...@hotmail.com> said:
>
> > My question is this, is there anyway I can seperate mail and web
> > traffic in the domains so that web requests goto my hosted dedicated
> > server and mail goes direct to my mail server that I have in my
> > office????
>
> Web uses A records, mail should use MX records.
>
> For redundancy, you should have more than one mail server, on separate
> physical networks/power supplies (and remember that all BT ADSL lines
> in a region can fail simultaneously).
>
> There are ISPs[1] that will provide backup secondary MX for you.
>
> Note that 123-Reg sets up an A record for the bare domain (without a
> www part) by default, and I can see no way to configure it otherwise.
>
> The only issue you will find is that despite RFC2821 section 5
>
> | If one or more MX RRs are found for a given
> | name, SMTP systems MUST NOT utilize any A RRs associated with that
> | name unless they are located using the MX RRs; the "implicit MX" rule
> | above applies only if there are no MX records present. If MX records
> | are present, but none of them are usable, this situation MUST be
> | reported as an error.
>
> I have seen broken MTA's trying to deliver to the A record associated
> with the bare domain, if the server associated with the MX record is
> unreachable.
>
> [1] e.g. http://www.gradwell.com/dns/secondary-hosting.php
>
>
Thanks for the reply, would the fact that i've had to change the
namserver for the domain in 123-reg to that of of my dedicated server
bear any problems at all

SimonG Ltd.

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Jun 4, 2004, 8:44:29 AM6/4/04
to

"Adam Davies" <corn...@hotmail.com> wrote in message
news:MPG.1b2a345af...@news.enta.net...

> In article <ufekovo...@wylie.me.uk>, al...@wylie.me.uk says...
> > On Fri, 4 Jun 2004 00:42:44 +0100, Adam Davies <corn...@hotmail.com>
said:
>
> Thanks for the reply, would the fact that i've had to change the
> namserver for the domain in 123-reg to that of of my dedicated server
> bear any problems at all

Yes, you will need to setup the MX records on Donhosts . . .not 123-reg . .
. a few months ago you would not have been able to do that but now you can,
it's a new feature that Donhosts introduced for free . . .

regards, SimonG


Adam Davies

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Jun 4, 2004, 12:24:42 PM6/4/04
to
In article <2ib96sF...@uni-berlin.de>, sp...@simong.co.uk says...
yeah that would affect the whole server though wouldnt it, I have a
dedicated server but I host my clients sites on there as well as my own,
so that would mean I would have to run all my clients emails through my
mail server in the office which isnt a good idea for me i think.

SimonG Ltd.

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Jun 8, 2004, 5:04:13 AM6/8/04
to

"Adam Davies" <sd...@sdf.com> wrote in message
news:MPG.1b2ab2a3a...@news.easynews.com...

> In article <2ib96sF...@uni-berlin.de>, sp...@simong.co.uk says...
> >
> > "Adam Davies" <corn...@hotmail.com> wrote in message
> > news:MPG.1b2a345af...@news.enta.net...
> > > In article <ufekovo...@wylie.me.uk>, al...@wylie.me.uk says...
> > > > On Fri, 4 Jun 2004 00:42:44 +0100, Adam Davies
<corn...@hotmail.com>
> > said:
> > >
> > > Thanks for the reply, would the fact that i've had to change the
> > > namserver for the domain in 123-reg to that of of my dedicated server
> > > bear any problems at all
> >
> > Yes, you will need to setup the MX records on Donhosts . . .not 123-reg
. .
> > . a few months ago you would not have been able to do that but now you
can,
> > it's a new feature that Donhosts introduced for free . . .
> >
> >
> >
> yeah that would affect the whole server though wouldnt it, I have a
> dedicated server but I host my clients sites on there as well as my own,
> so that would mean I would have to run all my clients emails through my
> mail server in the office which isnt a good idea for me i think.

Er . . . no, I don't think so . . . you have MX records for each Domain . .
. or am I misunderstanding something ?

regards, SimonG


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