Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonymity when domain exists, whois not updated yet)

2005-01-13 Thread Andre Oppermann
Steven Champeon wrote:
on Thu, Jan 13, 2005 at 10:25:18AM +0530, Suresh Ramasubramanian wrote:
On Wed, 12 Jan 2005 23:19:47 -0500, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
On Wed, 12 Jan 2005 19:19:24 PST, Dave Crocker said:
In general, that's what dkeys/iim and csv (and maybe spf) are attempting to provide.
Yes, but he asked for a rDNS solution specifically...
I think Steve was referring to some things that can be implemented
right away, like if you operate a mailserver, please make sure that
it isn't on a host that has reverse dns like ppp-XXX.adsl.example.com,
try to give it unique and non generic rDNS, preferably with a hostname
that starts off with smtp-out, mail, mta etc)
Yep. And it helps if the rDNS is right-anchored, (uses subdomains
to distinguish between various assignment types and technologies) a la
 1-2-3-4.dialup.dyn.example.net
   
 4-3-2-1.dsl.static.example.net
^^^
as opposed to 

 dyn-dialup-1-2-3-4.example.net
 static-dsl-4-3-2-1.example.net
as the former is easier to block using even the simplest of antispam
heuristics. I'd love to see a convention, or even a standard, arise for
rDNS naming of legit mail servers. But I'll happily settle for decent
and consistent rDNS naming of everything else ;)
What is wrong with MTAMARK?
MTAMARK tags the reverse entries of IP addresses where SMTP servers are.
Fixes this problem very fast, efficient and with little effort (script
magic to regenerate the reverse DNS entries).
 
ftp://ftp.rfc-editor.org/in-notes/internet-drafts/draft-stumpf-dns-mtamark-03.txt
--
Andre


Re: Proper authentication model

2005-01-13 Thread Michael . Dillon

  My point was that competing, differently-named and
  organisationally-separate suppliers of network services frequently use
  common suppliers for metro fibre, long-haul transport, building 
access,
  etc. Just because you buy different services from different providers
  doesn't mean there will be no common points of failure.

 Fate sharing is bad. The only way to be sure you aren't fate sharing is 
to
 request GIS data from the carriers. And even that could be wrong...

Tell your carrier that you want to buy physical seperacy.
Currently this is only offered by some metro networks
because corporates want physical seperacy to connect their SANs
(Storage Area Networks) to their offices. My company's 
network maintains seperacy for the financial market data
feeds that run across it. We do that because the customers
specifically demand that capability.

Rather than trying to do the carrier's job by requesting
GIS data, tell them you want to buy physical seperacy
as a product. Get them to do the work and show you the
data to prove that they really are delivering physical
seperacy.

--Michael Dillon



Re: Proper authentication model

2005-01-13 Thread Erik Haagsman

On Wed, 2005-01-12 at 20:12, Daniel Golding wrote:
 
 The biggest problem I've seen with dial-up OOB is reliability. You really
 need you really need to have a good series of testing scripts to ensure that
 all the phone lines are working, modems have reset properly, serial ports
 are ok, etc. Without this, reliability is low.

Although it's perhaps not as reliable as a series of dedicated cicruits
to connect various locations, I don't consider an ISDN router with it's
Ethernet port connected to a management ethernet port as an unreliable
solution. Modems and TA's perhaps, but a series of 2600's or similar
devices with basic rate interfaces on each location shouldn't be your
biggest worry at the moment you actually need them.

CHeers,

-- 
---
Erik Haagsman
Network Architect
We Dare BV
tel: +31(0)10 7507008
fax:+31(0)10 7507005
http://www.we-dare.nl




Re: [eweek article] Window of anonymity when domain exists, whois not updated

2005-01-13 Thread Stephane Bortzmeyer

On Wed, Jan 12, 2005 at 04:11:42PM +,
 [EMAIL PROTECTED] [EMAIL PROTECTED] wrote 
 a message of 16 lines which said:

 And if you will trust an ISP to deliver port 25 packets then why
 wouldn't you trust them to deliver email messages?

There are *many* ISP which provide a reasonable job when carrying IP
packets but not an acceptable one when relaying email. If it seems a
paradox to you, remember that loosing 5 % of the packets still allow
users to work while loosing 1 % of the email is unacceptable.

If you never met an ISP with a reasonable service for IP packets and a
very lousy service for email, then it means we do not live in the same
world.


Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Stephane Bortzmeyer

On Wed, Jan 12, 2005 at 10:59:43AM -0500,
 Steven Champeon [EMAIL PROTECTED] wrote 
 a message of 98 lines which said:

 0) for the love of God, Montresor, just block port 25 outbound
 already.

If there is no escape / exemption (as proposed by William Leibzon),
then, as a consumer, I scream OVER MY DEAD BODY!!!.

I want to be able to manage an email server when I subscribe to an
ISP.

In any case, it would no longer be Internet access. See the
Internet-Draft draft-klensin-ip-service-terms-04.txt, Terminology for
Describing Internet Connectivity.






Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Stephane Bortzmeyer

On Wed, Jan 12, 2005 at 10:59:43AM -0500,
 Steven Champeon [EMAIL PROTECTED] wrote 
 a message of 98 lines which said:

 1) any legitimate mail source MUST have valid, functioning,
 non-generic rDNS indicating that it is a mail server or
 source. (Most do, many do not. There is NO reason why not.)

Since this list is NANOG, it is reasonable that it has a North
American bias but remember the Internet is worldwide. I do not know
how it is in the USA but there are many parts of the world where ISP
do not have a delegation of in-addr.arpa and therefore cannot pass it
to their customers. (It is also common to have many levels of ISP, so
you need to go through many layers before reaching the RIR.)

Requesting rDNS means I don't want to receive email from Africa.


Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Stephane Bortzmeyer

On Wed, Jan 12, 2005 at 10:59:43AM -0500,
 Steven Champeon [EMAIL PROTECTED] wrote 
 a message of 98 lines which said:

 4) all domains with invalid whois data MUST be deactivated (not
 confiscated, just temporarily removed from the root dbs) immediately
 and their owners contacted.

Because there is no data protection on many databases (such as .com
registrars who are forced to sell the data if requested), people lie
when registering, because it is the only tool they have to protect
their privacy.

Fix the data protection problem and you'll have a better case to force
people to register proper information.
 
 5) whois data MUST be normalized and available in machine-readable
 form (such as a standard XML schema)

RFC 3981



/24 route propagation, how long is reasonable?

2005-01-13 Thread Michael Airhart

Quick question for the group..
How long should I be patient to wait for some /24s to become fully routable 
worldwide?

None of the addresses are mine, they came from the upstream (only one provider)
They are all part of the upstreams IP space, and I had assumed that they 
would have kept them as part of a larger block and just blackholed into 
their network..  Instead it seems that route filters had to be propagated 
WW before the traffic would leave a given AS..

I can reach the nets now (after the first day) from most of the ASs out 
there, as seen from traceroute.org... But, as my luck would have it, the 
two nets that I connect from can't get there (die at the handoff to the 
next AS).  I have confirmed this from other people on a few other ASs as well.

It has been two days now..  I don't want to be one of those PITA customers 
you guys get tired of, but I have work to get done..  How long should I sit 
on my hands?

Note: I would post the /24s, but I don't want to call negative attention to 
a SP that might be doing his/her job just fine and I just have unrealistic 
expectations..

Thanks in advance!
Michael


RE: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonymity when domain exists, whois not updated yet)

2005-01-13 Thread Joseph Johnson

 Basically a call to operators to adopt a consistent forward and
 reverse DNS naming pattern for their mailservers, static IP netblocks,
 dynamic IP netblocks etc.

 ...and to ISPs to facilitate the process by supporting their users who
 want to run mail servers, and helping the rest of us use such techniques
 to quarantine the spew from zombies and less conscientious mail admins.

 I'm always willing to be educated on why it is impossible for any given
 ISP to maintain an in-addr.arpa zone with PTRs for their customers who
 wish to be treated like real admins, as opposed to casual consumer-grade
 users with dynamically assigned addresses.


The problem is it is easier to set it up with a single standard
4-3-2-1.dialup.xyzisp.com then to change the IN-ADDR to mail.customer2.com.
I only have an rDNS entry on the box at home because I used to work for the
ISP.  It's still there only because they probably haven't noticed, and will
not until I draw attention to it or I give up the space if I cancel service.

Still, it took me 3 minutes to put rDNS on most of 7 of 16 in my /28.  It
existed in their provisioning system to do it, but no one knew how.  We
couldn't even market it as a service, because it didn't exist in the
system.  I can't imagine, though, SBC being able to cope with tens of
thousands of small business DSL accounts suddenly needing rDNS on their
static IP's.

Another question, though, is how they handle IN-ADDR and swip for dedicated
circuits.  If they can do it for a T1 customer, can they do it for a DSL
customer?  Maybe an online form the customer can maintain?  Lord knows that
would be better then trying to call their DSL tech support . . . 


Joe Johnson



Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Rich Kulawiec

On Thu, Jan 13, 2005 at 12:26:47PM +0100, Stephane Bortzmeyer wrote:
  4) all domains with invalid whois data MUST be deactivated (not
  confiscated, just temporarily removed from the root dbs) immediately
  and their owners contacted.
 
 Because there is no data protection on many databases (such as .com
 registrars who are forced to sell the data if requested), people lie
 when registering, because it is the only tool they have to protect
 their privacy.

Those people are fooling themselves.  Much of the domain registration
data is already being offered for sale (by spammers, of course) and no
doubt, when it suits their purposes to do so, the same people will find
a way to acquire the supposedly private data behind the rest.

(How are they getting the data?  I don't know.  Could be weak registrar
security, could be a backroom deal, could be a rogue employee.  But there
is demand for the data, and plenty of money to pay for it, therefore it
*will* be acquired and sold.)

The current pretense of privacy is nothing more than a convenient
mechanism for registrars to pad their wallets and evade responsible
for facilitating abuse.

---Rsk



Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Valdis . Kletnieks
On Thu, 13 Jan 2005 12:21:04 +0100, Stephane Bortzmeyer said:

 American bias but remember the Internet is worldwide. I do not know
 how it is in the USA but there are many parts of the world where ISP
 do not have a delegation of in-addr.arpa and therefore cannot pass it
 to their customers. (It is also common to have many levels of ISP, so
 you need to go through many layers before reaching the RIR.)

That is indeed a problem that needs to be solved if you want any sort of
rDNS-based service to work well.

 Requesting rDNS means I don't want to receive email from Africa.

Having an rDNS entry for a host doesn't mean you know if it is/isn't in Africa,
to any higher degree of certainty than when you just had the IP address.

I'm not on our campus.  But I can see it from out my office window. (The
official campus starts across the street from me). I'm about 4 hours drive
southwest of Washington DC.

professory.cesa.vt.edu is 195.176.186.74, and has a proper PTR entry back.
It's a host of ours.  It's in Switzerland at our Center for European Studies
and Architecture.

So what did that rDNS entry tell you about its location that you didn't
know from 195.176/16?




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Description: PGP signature


FW: AlterPoint Mail Security detected prohibited content in a message sent from your address (SYM:42361956180980318002)

2005-01-13 Thread Steven Champeon


Why content filtering is stupid:

- Forwarded message from [EMAIL PROTECTED] -

X-Delivered-To: [EMAIL PROTECTED]
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: AlterPoint Mail Security detected prohibited content in a message sent 
from your address
(SYM:42361956180980318002)
Date: Wed, 12 Jan 2005 23:12:40 -0600

Subject of the message: Re: fixing insecure email infrastructure (was: Re: 
[eweek article] Window of anonymity when domain exists, whois not updated yet)
Recipient of the message: nanog@merit.edu nanog@merit.edu

- End forwarded message -

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answered: /24 route propagation, how long is reasonable?

2005-01-13 Thread Michael Airhart
Thanks for the private responses I received!
Turns out it was a AS append problem...
Michael

Quick question for the group..
How long should I be patient to wait for some /24s to become fully routable 
worldwide?

None of the addresses are mine, they came from the upstream (only one provider)
They are all part of the upstreams IP space, and I had assumed that they 
would have kept them as part of a larger block and just blackholed into 
their network..  Instead it seems that route filters had to be propagated 
WW before the traffic would leave a given AS..

I can reach the nets now (after the first day) from most of the ASs out 
there, as seen from traceroute.org... But, as my luck would have it, the 
two nets that I connect from can't get there (die at the handoff to the 
next AS).  I have confirmed this from other people on a few other ASs as well.

It has been two days now..  I don't want to be one of those PITA customers 
you guys get tired of, but I have work to get done..  How long should I sit 
on my hands?

Note: I would post the /24s, but I don't want to call negative attention to 
a SP that might be doing his/her job just fine and I just have unrealistic 
expectations..

Thanks in advance!
Michael


Re: [eweek article] Window of anonymity when domain exists, whois not updated yet

2005-01-13 Thread Dave Crocker

On Wed, 12 Jan 2005 17:41:33 -0500, [EMAIL PROTECTED] wrote:
  The X.400 concepts of ADMD= and PRMD= really caught on, didn't they? ;)

  Peering in a world of 64K ASNs, mostly basically static, is a lot different
  than peering in a world of 40 million plus .COMs, many in motion.  Most of
  the time, we're lucky if the MX record points to the right place

Funny this should come up now...

I've been working on a document to describe current Internet Mail architecture 
and it has taken an unexpected turn.  In fact I am trying to add a section that 
deals with different Operators, as distinct from different functional modules.  
The reason is primarily because the inter-Operator boundaries define where 
trust relationships need to be decided and enforced. (The recent papers and 
discussions about tussle boundaries captures this issue really well.)

As with so many problems with x.400, it is not that it was wrong to pay 
attention to one or another issue.  The problem was that x.400 mixed everything 
together into a single, homogeneous and gargantuan pot, therefore requiring 
adopters to deal with an ungainly mass of specification and code, all at once.  
You really could not do adoption in incremental steps.  Oh, and this 
all-or-nothing barrier hit the standards guys, too, since some required 
components did not show up for a long time.

The x.400 admd/prmd was, in fact, an addressing construct, rather than merely 
being an operational and routing construct.  Hence, an x.400 address was more 
like a source route.  Arpanet/Internet experience has shown pretty serious 
scaling problems with visible source routing, uucp experience notwithstanding.

The issue we are facing in the current discussion is operations, not 
addressing.  So, for example, the fact of having a variety of operators does 
not show up in the address, any more than it does in an IP address.  Rather, it 
shows up in routing and trust issues, just as it does with IP.

Although lots of operational variety is possible and does occur, perhaps the 
most common operational scenarios are covered by:

origin = [provider =]  [provider =]  destination

And the equivalent to AS-AS trust assessment is not all of the domains in the 
world, but rather domains that involve MTA-MTA exchanges across operator 
boundaries.

I believe the scale of this requirement is exactly the same as the AS-AS 
requirement.

In fact, this is exactly the problem that CSV attends to.

d/
--
Dave Crocker
Brandenburg InternetWorking
+1.408.246.8253
dcrocker  a t ...
WE'VE MOVED to:  www.bbiw.net



Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of an

2005-01-13 Thread Stephane Bortzmeyer

On Thu, Jan 13, 2005 at 10:21:20AM -0500,
 [EMAIL PROTECTED] [EMAIL PROTECTED] wrote 
 a message of 45 lines which said:

  Requesting rDNS means I don't want to receive email from Africa.
 
 Having an rDNS entry for a host doesn't mean you know if it is/isn't
 in Africa,

Of course, I know that. I just mentioned Africa because, in many
countries in Africa, it is simply impossible to get a PTR
record. That's a fact, there are many reasons behind.



Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Steven Champeon

on Thu, Jan 13, 2005 at 12:21:04PM +0100, Stephane Bortzmeyer wrote:
 
 On Wed, Jan 12, 2005 at 10:59:43AM -0500,
  Steven Champeon [EMAIL PROTECTED] wrote 
  a message of 98 lines which said:
 
  1) any legitimate mail source MUST have valid, functioning,
  non-generic rDNS indicating that it is a mail server or
  source. (Most do, many do not. There is NO reason why not.)
 
 Since this list is NANOG, it is reasonable that it has a North
 American bias but remember the Internet is worldwide. I do not know
 how it is in the USA but there are many parts of the world where ISP
 do not have a delegation of in-addr.arpa and therefore cannot pass it
 to their customers. (It is also common to have many levels of ISP, so
 you need to go through many layers before reaching the RIR.)

Seems this needs to be fixed, then. Not my problem.
 
 Requesting rDNS means I don't want to receive email from Africa.

See above.

-- 
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Re: /24 route propagation, how long is reasonable?

2005-01-13 Thread bmanning

 Quick question for the group..
 
 How long should I be patient to wait for some /24s to become fully routable 
 worldwide?

forever.  - or until you clarify your terms.
all addresses, regardless of origin, are inherently fully routable
worldwide ...  but to instansiate this as a fact requires one of
two things:
) you run -all- the routing infrastrucuture, worldwide
or
) every entity that runs BGP or an IGP agrees to transit
  your /24 to everyplace they have a path to.

neither is likely - imho, so you -must- mean something else.

 Michael

--bill


Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonymity when domain exists, whois not updated yet)

2005-01-13 Thread Steven Champeon

on Wed, Jan 12, 2005 at 04:51:34PM -0800, william(at)elan.net wrote:

...a very long and useful and informative message, for which I thank him.

Off to go decipher the madness that is RFC3982,
Steve

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Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of an

2005-01-13 Thread Eric Brunner-Williams in Portland Maine

 Of course, I know that. I just mentioned Africa because, in many
 countries in Africa, it is simply impossible to get a PTR
 record. That's a fact, there are many reasons behind.

Howdy Stephane,

It is also an area where many cctld operators maintain their registration
data using spreadsheets, and whois isn't :43.

Not an issue of activel malfeasence, other than early adopter attitudes
towards late, and challenged adopters. As you note, there are many reasons
behind [it, the impossibility to get a PTR record or a :43 server connect].

Eric


Cisco 7513 Bandwidth Points

2005-01-13 Thread Claydon, Tom

Hello,

We are moving from a Cisco 7206 to a 7513, and I was wondering if we
will be limited by bandwidth points on the 7513 (as we are with the
7206). From the sparse documentation I've found so far, it doesn't
appear that this limitation exists in the 7513, correct?

Off-list replies are welcomed.

Thanks,
 
= TC
 
--
Tom Claydon, IT/ATM Network Engineer
Dobson Telephone Company
phone: (405) 391-8201  cell: (405) 834-0341




Re: Cisco 7513 Bandwidth Points

2005-01-13 Thread Jon Lewis

On Thu, 13 Jan 2005, Claydon, Tom wrote:

 We are moving from a Cisco 7206 to a 7513, and I was wondering if we
 will be limited by bandwidth points on the 7513 (as we are with the
 7206). From the sparse documentation I've found so far, it doesn't
 appear that this limitation exists in the 7513, correct?

This is really more a cisco-nsp type question.

To answer, no, the 7500 doesn't have the bandwidth points issue the 7200s
have.  Each VIP has its own PCI bus(es) for PAs and then connects to the/a
1gbit cybus.

7500s have a whole new set of scaling issues.  :)

As long as you don't believe the performance numbers someone at cisco made
up for the 7500 VIP datasheets, you'll be fine.

--
 Jon Lewis   |  I route
 Senior Network Engineer |  therefore you are
 Atlantic Net|
_ http://www.lewis.org/~jlewis/pgp for PGP public key_


Re: Proper authentication model

2005-01-13 Thread Owen DeLong
That's great if you want to trust one carrier to provide all your seperacy,
but, when you want to make sure carrier A isn't running your ring in common
with carrier B, you need GIS data.
Owen
--On Thursday, January 13, 2005 10:36 AM + [EMAIL PROTECTED] 
wrote:


 My point was that competing, differently-named and
 organisationally-separate suppliers of network services frequently use
 common suppliers for metro fibre, long-haul transport, building
access,
 etc. Just because you buy different services from different providers
 doesn't mean there will be no common points of failure.

Fate sharing is bad. The only way to be sure you aren't fate sharing is
to
request GIS data from the carriers. And even that could be wrong...
Tell your carrier that you want to buy physical seperacy.
Currently this is only offered by some metro networks
because corporates want physical seperacy to connect their SANs
(Storage Area Networks) to their offices. My company's
network maintains seperacy for the financial market data
feeds that run across it. We do that because the customers
specifically demand that capability.
Rather than trying to do the carrier's job by requesting
GIS data, tell them you want to buy physical seperacy
as a product. Get them to do the work and show you the
data to prove that they really are delivering physical
seperacy.
--Michael Dillon

--
If it wasn't crypto-signed, it probably didn't come from me.


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Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Owen DeLong
Requesting rDNS means I don't want to receive email from Africa.
Having an rDNS entry for a host doesn't mean you know if it is/isn't in
Africa, to any higher degree of certainty than when you just had the IP
address.
What he was pointing out her is that a majority of African ISPs do not even
have the ability to assign rDNS to their address space.  This is an 
unfortunate
fact which should get somewhat better as a result of ARIN policies 2002-3
and 2003-15.  I don't know to what extent those policies have helped yet,
but, at least it is much easier for African ISPs to get direct allocations
now.

In essence, it is virtually impossible for a small-medium business in Africa
to set up a mail server and have rDNS entries created for it because their
ISP doesn't control the IN-ADDRs and the imcumbent Telco doesn't want to
do anything they don't absolutely have to for the competitive ISPs.
Owen
--
If it wasn't crypto-signed, it probably didn't come from me.


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Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of anonym

2005-01-13 Thread Valdis . Kletnieks
On Thu, 13 Jan 2005 11:35:23 PST, Owen DeLong said:

  Requesting rDNS means I don't want to receive email from Africa.
 
  Having an rDNS entry for a host doesn't mean you know if it is/isn't in
  Africa, to any higher degree of certainty than when you just had the IP
  address.
 
 What he was pointing out her is that a majority of African ISPs do not even
 have the ability to assign rDNS to their address space.

Ahh.. I've had so many people of late say words to the effect of I want rDNS
so I can implement blocking geographical that I didn't realize what he
meant was Implementing it means an Africa-shaped projectile wound in your 
foot.. ;)



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Re: marking dynamic ranges, was fixing insecure email infrastructure

2005-01-13 Thread John Levine


What is wrong with MTAMARK?

MTAMARK tags the reverse entries of IP addresses where SMTP servers
are.  Fixes this problem very fast, efficient and with little effort
(script magic to regenerate the reverse DNS entries).

In priciple, nothing.  In practice, the rDNS is a mess and I don't know
many people who think it's likely to get cleaned up enough that we can
expect to put in all the MTA MARK entries.

-- 
John R. Levine, IECC, POB 727, Trumansburg NY 14886 +1 607 330 5711
[EMAIL PROTECTED], Mayor, http://johnlevine.com, 
Member, Provisional board, Coalition Against Unsolicited Commercial E-mail


North American MPLS

2005-01-13 Thread Vogel, Doug

Does anyone have an MPLS network up and running in North America?  Can
you share your experiences with the carriers. How did installations go
and how has support been?  I am particularly interested in BT and ATT.


Re: fixing insecure email infrastructure (was: Re: [eweek article]

2005-01-13 Thread Mark Andrews

What is wrong with MTAMARK?

As currently described it doesn't fit well with RFC 2317
style delegations.  They would need to be converted to use
DNAME instead of CNAME which requires all the delegating
servers to be upgraded to support DNAME.

There are other issues but hear is not the correct place
to debate them.


Re: fixing insecure email infrastructure (was: Re: [eweek article] Window of an

2005-01-13 Thread Barry Shein


On January 13, 2005 at 17:41 [EMAIL PROTECTED] (Stephane Bortzmeyer) wrote:
  Of course, I know that. I just mentioned Africa because, in many
  countries in Africa, it is simply impossible to get a PTR
  record. That's a fact, there are many reasons behind.

That's because one of their leader's widows has 10 million PTRs they
can't get to without your help and are more than willing to give you
15% of them if you would just deposit...

I think the answer to not having rDNS in such an endemic way is to
arrange to have your email delivered by a host which does like hotmail
or whatever or pay someone to accept your non-rDNS connections as a
special case and forward it along.

Put another way, I don't know much chaos we should accomodate when
solutions really aren't very difficult.

-- 
-Barry Shein

Software Tool  Die| [EMAIL PROTECTED]   | http://www.TheWorld.com
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Re: Cisco 7513 Bandwidth Points

2005-01-13 Thread Noel Montales

On-List replies perhaps may be usefull.. Or could you post a summary of
your findings?

Regards,
Noel Montales

Claydon, Tom said:

 Hello,

 We are moving from a Cisco 7206 to a 7513, and I was wondering if we
 will be limited by bandwidth points on the 7513 (as we are with the
 7206). From the sparse documentation I've found so far, it doesn't
 appear that this limitation exists in the 7513, correct?

 Off-list replies are welcomed.





Re: fixing insecure email infrastructure (was: Re: [eweek article]

2005-01-13 Thread Owen DeLong
That's bad sincd DNAME is deprecated and has been removed from BIND.
Owen
--On Friday, January 14, 2005 10:05 +1100 Mark Andrews 
[EMAIL PROTECTED] wrote:


What is wrong with MTAMARK?
As currently described it doesn't fit well with RFC 2317
style delegations.  They would need to be converted to use
DNAME instead of CNAME which requires all the delegating
servers to be upgraded to support DNAME.
There are other issues but hear is not the correct place
to debate them.

--
If this message was not signed with gpg key 0FE2AA3D, it's probably
a forgery.


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Re: fixing insecure email infrastructure (was: Re: [eweek article]

2005-01-13 Thread william(at)elan.net


On Thu, 13 Jan 2005, Owen DeLong wrote:

 That's bad sincd DNAME is deprecated and has been removed from BIND.
 
 Owen

No, its A6 that is to be depreciated (and too bad because its superior 
to ), but last I heard DNAME stays as standard RR.

-- 
William Leibzon
Elan Networks
[EMAIL PROTECTED]



Re: fixing insecure email infrastructure (was: Re: [eweek article]

2005-01-13 Thread Suresh Ramasubramanian

On Thu, 13 Jan 2005 22:43:24 -0800 (PST), william(at)elan.net
[EMAIL PROTECTED] wrote:
 On Thu, 13 Jan 2005, Owen DeLong wrote:
 
  That's bad sincd DNAME is deprecated and has been removed from BIND.
 
 No, its A6 that is to be depreciated (and too bad because its superior
 to ), but last I heard DNAME stays as standard RR.

Cue DJB's kill A6 page
http://cr.yp.to/djbdns/killa6.html

-- 
Suresh Ramasubramanian ([EMAIL PROTECTED])