On Monday 03 August 2009 00:36, Les Mikesell wrote:
> Drew wrote:
> >> It's a bit of bad form to use NAT and private addresses at all because
> >> the internet really wasn't designed to be segmented, but everyone does
> >> it.
> >
> > Why is NAT bad form?
>
> I don't mean to imply it should
Jason Pyeron wrote:
>> CNAME's can only be used for things that only have an A record. for
>> example, you can't use a CNAME for a domain, which needs a SOA, A, NS, MX
>> record.
>>
>
>
> Not sure if you are ACKing or NAKing?
>
> Pdinc.us mx 1 smtprelay.pdinc.us
> Smtprelay.pdinc.us cname s
Jason Pyeron wrote:
>
>> I'd expect the most common case to be mail user agents that
>> have to be specifically configured for the forwarding smtp
>> server anyway.
>
> In fact most are default configurations. An engineer will up an (vm) image,
> give
> it some tasks to do (temp website, so
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of John R Pierce
> Sent: Monday, August 03, 2009 12:34
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Jason Pyeron wrote:
> > I
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
> Sent: Monday, August 03, 2009 12:28
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Jason Pyeron wrote:
> >
&g
Jason Pyeron wrote:
> I like the idea about the cname. Can a cname be used as a host for a MX
> record?
>
CNAME's can only be used for things that only have an A record. for
example, you can't use a CNAME for a domain, which needs a SOA, A, NS,
MX record.
in general, CNAME's should be avo
Jason Pyeron wrote:
>
>> Personally, I don't like to rely on features that are
>> vendor-specific like that but it might be a quick fix for
>> this problem. The real solution would be to configure your
>> sending sendmails to use a MAIL_HUB setting - at least any
>
> Not all of the systems
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
> Sent: Monday, August 03, 2009 11:49
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Filipe Brandenburger wrote:
>
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Filipe Brandenburger
> Sent: Monday, August 03, 2009 10:40
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Hi,
>
> On Mon, Aug
Filipe Brandenburger wrote:
>
> On Mon, Aug 3, 2009 at 10:27, Jason Pyeron wrote:
>> My worry is the A record for the outsourced mail service is out of our
>> control,
>> if it were to change it would be catastrophic.
>
> Well, if you *must* use a name like mx.google.com for your MX, you
> could
Hi,
On Mon, Aug 3, 2009 at 10:27, Jason Pyeron wrote:
> My worry is the A record for the outsourced mail service is out of our
> control,
> if it were to change it would be catastrophic.
Well, if you *must* use a name like mx.google.com for your MX, you
could also set up an mx.google.com domain
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Filipe Brandenburger
> Sent: Monday, August 03, 2009 10:10
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Hi,
>
> On Su
Hi,
On Sun, Aug 2, 2009 at 15:16, Jason Pyeron wrote:
> Now we want to just override the MX records for pdinc.us without having to
> merge
> or manage all the records for every entry/subdoamin in the zone file for
> pdinc.us.
Why don't you just set the MX records of pdinc.us to something inside
Drew wrote:
>> It's a bit of bad form to use NAT and private addresses at all because the
>> internet really wasn't designed to be segmented, but everyone does it.
>
> Why is NAT bad form?
I don't mean to imply it shouldn't be used - it is pretty much a necessary evil
now, but it doesn't fit the
> It's a bit of bad form to use NAT and private addresses at all because the
> internet really wasn't designed to be segmented, but everyone does it.
Why is NAT bad form?
>From my standpoint as an admin, private IP's & NAT are another tool to
help secure my network. You can't attack what you can'
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
> Sent: Sunday, August 02, 2009 18:20
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Jason Pyeron wrote:
> >&g
Jason Pyeron wrote:
>> You could just firewall port 25 on the spam-checking MX
>
> They are outsourced to google, we cannot control that.
You must have a firewall that you control on your side where these connections
have to pass.
>> relays from the trusted networks and add a high-number
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
> Sent: Sunday, August 02, 2009 17:38
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Jason Pyeron wrote:
> >> ---
Jason Pyeron wrote:
>> -Original Message-
>> From: centos-boun...@centos.org
>> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
>> Sent: Sunday, August 02, 2009 16:21
>> To: CentOS mailing list
>> Subject: Re: [CentOS] Split dns issues
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Les Mikesell
> Sent: Sunday, August 02, 2009 16:21
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Christoph Maser wrote:
> > Am
Christoph Maser wrote:
> Am Sonntag, den 02.08.2009, 21:16 +0200 schrieb Jason Pyeron:
>> We have internal DNS servers that will override the A record for selected
>> hosts.
>> Example mail.pdinc.us will have a different internal ip than external. This
>> has
>> always been a fine way to handle i
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Christoph Maser
> Sent: Sunday, August 02, 2009 16:02
> To: CentOS mailing list
> Subject: Re: [CentOS] Split dns issues
>
> Am Sonntag, den 02.08.2009, 2
Am Sonntag, den 02.08.2009, 21:16 +0200 schrieb Jason Pyeron:
> We have internal DNS servers that will override the A record for selected
> hosts.
> Example mail.pdinc.us will have a different internal ip than external. This
> has
> always been a fine way to handle it as the zone files are for th
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Jason Pyeron
> Sent: Sunday, August 02, 2009 15:52
> To: 'CentOS mailing list'
> Subject: Re: [CentOS] Split dns issues
>
>
>
> > -
> -Original Message-
> From: centos-boun...@centos.org
> [mailto:centos-boun...@centos.org] On Behalf Of Bill Campbell
> Sent: Sunday, August 02, 2009 15:20
> To: centos@centos.org
> Subject: Re: [CentOS] Split dns issues
>
> On Sun, Aug 02, 2009, Jason
On Sun, Aug 02, 2009, Jason Pyeron wrote:
>We have internal DNS servers that will override the A record for selected
>hosts.
>Example mail.pdinc.us will have a different internal ip than external. This has
>always been a fine way to handle it as the zone files are for that specific
>host, and ther
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