HP 3000 Manuals HP 3000 Manuals
Address Translation Most ADMD services only accept messages into their service from X.400 addresses which are known to them. For example, ATTMAIL requires that the originator of a message must have an X.400 address with the values C=US and A=ATTMAIL. If the originator of the message has an X.400 address with a different value for the country and ADMD name, the message is rejected. If a single machine must connect to more than one ADMD service, it is not possible to send messages directly to all ADMDs. All but one message will be rejected since every X.400 MTA has only one country, ADMD, and PRMD associated with it. Address translation allows a single machine to connect to more than one ADMD because messages leaving a single machine have the country and ADMD values required by the ADMD to which they are sent. For example, the originator O/R address of a message sent through the ATTMAIL service has the values C=US and A=ATTMAIL while a message from the same originator sent through the MCIMAIL service has an O/R address with values C=US and A=MCIMAIL. With address translation, the user sending a message would not need to know which ADMD service is being used and would not be affected if the ADMD service changes. Address translation is performed for both incoming and outgoing messages. When the MTA checks if the O/R address belongs to a user group for a user group with address translation enabled, the country and ADMD of the O/R address are disregarded in this check. For outgoing messages being sent to an adjacent MTA whose country and/or ADMD differ from that of the local MTA, all O/R addresses in the message are checked to see if they belong to a user group with address translation enabled. The country and ADMD are disregarded in this check. If an O/R address does belong to such a user group, the country and ADMD in the address are changed to the country and ADMD configured for the adjacent MTA. For incoming messages being received from an adjacent MTA, all O/R addresses in the message are checked to see if they belong to a user group with address translation enabled. The country and ADMD are disregarded in this check. If an O/R address does belong to such a user group, the country and ADMD in the address are changed to the country and ADMD configured for the user group. As a general rule, address translation should be enabled for user groups made up of users from inside the organization and disabled for user groups made up of users from outside the organization.