[comp.protocols.iso.x400] ADMD routing policy

khiem@hpindda.cup.hp.COM (Khiem Ho) (08/13/90)

I have two general questions on routing capability and routing policy of
(real) ADMDs out there.

(a) Would an ADMD route to an MTA, which could be located in the same
country or outside, using the triplet <Country, ADMD, PRMD> even the
Country/ADMD is different from its own.

(b) Would it route to the MTA which is located in a different country
but can accept messages addressed to /C=CountryOfADMD/ADMD=ADMDinQuestion?

The scenario is very real in terms of an international company
wanting to have only a single X.400 gateway connecting to ADMDs in more
than one country (eg, traffic does not justify cost for each machine in
each country). I understand that CCITT Blue Book might not allow it
policy-wise, but technically it's not difficult and ISO version of
X.400 (MOTIS) do have the provision of allowing a PRMD connecting to
ADMDs in different countries.

If you have dealt with ADMDs and have knowledge and information on
the question, please share.  Is there ADMD people out there in the net
that have the info?

Thanks in advance,

Khiem Ho
HewLett Packard

Stef@nrtc.northrop.COM (Einar Stefferud) (08/16/90)

> I have two general questions on routing capability and routing policy of
> (real) ADMDs out there.

> (a) Would an ADMD route to an MTA, which could be located in the same
>A country or outside, using the triplet <Country, ADMD, PRMD> even the
> Country/ADMD is different from its own.

Yes, an ADMD in Country A can be connected to a PRMD in Country B, and
transfer directly to it, if the rule sof Country B allow it.  This is a
local matter under the CCITT recmendations.

In reality, it is happening, and will be impossible to prevent or or
even to monitor.

> (b) Would it route to the MTA which is located in a different country
> but can accept messages addressed to /C=CountryOfADMD/ADMD=ADMDinQuestion?

I am not sure what you are asking here.  Can you expand on it?

> The scenario is very real in terms of an international company
> wanting to have only a single X.400 gateway connecting to ADMDs in more
> than one country (eg, traffic does not justify cost for each machine in
> each country). I understand that CCITT Blue Book might not allow it
> policy-wise, but technically it's not difficult and ISO version of
> X.400 (MOTIS) do have the provision of allowing a PRMD connecting to
> ADMDs in different countries.

> If you have dealt with ADMDs and have knowledge and information on
> the question, please share.  Is there ADMD people out there in the net
> that have the info?

Yes, as noted above, it is not preventable, and it is happening.

Best...\Stef

khiem@hpinddm.cup.hp.COM (Khiem Ho) (08/17/90)

>> (a) Would an ADMD route to an MTA, which could be located in the same
>>A country or outside, using the triplet <Country, ADMD, PRMD> even the
>> Country/ADMD is different from its own.
>
>Yes, an ADMD in Country A can be connected to a PRMD in Country B, and
>transfer directly to it, if the rule sof Country B allow it.  This is a
>local matter under the CCITT recmendations.

Yes, because it's a local matter and it's explicitly avoided (or
prohibited?) in the Red/Blue Books, so I didn't know if anyone is doing it.
What I am looking for is WHICH ADMD or which country is doing it,
or will do it if a PRMD requests.


>> (b) Would it route to the MTA which is located in a different country
>> but can accept messages addressed to /C=CountryOfADMD/ADMD=ADMDinQuestion?
>
>I am not sure what you are asking here.  Can you expand on it?


For example, the MTA is in UK which normally uses /C=UK/ADMD=Gold 400/
as part of its ORAddress. This MTA also serves as a gateway for the
Swiss branch office. Sender in the UK might address Swiss branch office
as /C=CH/ADMD=???/PRMD=XYZ. Gold 400 routes to Swiss ADMD. Company XYZ
has only one gateway MTA ins UK, so it would like Swiss ADMD to route
messages addressing /C=CH/ADMD=???/PRMD=XYZ to this MTA.

>Yes, as noted above, it is not preventable, and it is happening.

Can you give me some list, if possible, of who is doing it?


Khiem

eskovgaa@uvcw.uvic.ca (Erik Skovgaard) (08/17/90)

I think we have to distinguish between the location of a person and
his/her mailbox.  If the mailservice is located in a different
country you should use that country name attribute, not that of
the person.

One way of getting from the name and location of a person to his/her
mailbox would be to use the Directory.  In most cases you would
associate the country RDN with that persons job or location.

                                         ....Erik.