PMDF System Manager's Guide

You can configure PMDF and cc:Mail so that cc:Mail users perceive that they are sending mail to another cc:Mail post office when in fact they are really sending mail to some other remote enclave which can or can not in fact be using cc:Mail. PMDF can gateway messages without the cc:Mail users ever being the wiser.

For instance, suppose that you will be connecting your local cc:Mail users with a remote cc:Mail post office named NEWYORK, where the NEWYORK post office is really a UNIX system named ny.example.com reachable via the Internet. Note that this already works using your standard PMDF cc:Mail channel configuration, but it requires that the cc:Mail users use the address format user@nu.example.com The goal here is to simplify the addressing format so that cc:Mail users simply send to user at NEWYORK just as they would for any other cc:Mail post office.

This can appear to be the same as the FAN (foreign alias name) setup discussed in Section 38.5.6. However when mail is received in cc:Mail from a user in a pseudo post office, the From: address looks like a normal cc:Mail post office. Thus the illusion of a post office is more complete with this scheme. A combination of both can be useful depending on your specific site configuration.

Mail coming from ny.example.com into cc:Mail would appear as though it originated from a cc:Mail post office, i.e., bear a From: address of "user at NEWYORK" instead of "user@ny.example.com at PMDF". To achieve this you need to add additional rewrite rules to your PMDF configuration file.

To your PMDF configuration file lan.rules , add the following rewrite rules to the existing rewrite rules for ny.example.com (if any):

ny.example.com $U%ny.example.com@TCP-DAEMON$E$F ny.example.com $U$%NEWYORK@ccmail.example.com$Qcc_local ny.example.com $U%ny.example.com@TCP-DAEMON

And, add the following channel definitions to that same file:

cc_newyork master ny.example.com

Next, you will need to create an option file, PMDF_TABLE:cc_newyork_option. on OpenVMS or /pmdf/table/cc_newyork_option on UNIX, for this pseudo cc:Mail post office called NEWYORK. In the option file you might have entires such as these on OpenVMS

! On OpenVMS CC_GATEWAY_NAME=NEWYORK CC_OUTPUT_FILE_NAME=diska:[ccmail.pmdf]ccmailny.imp CC_INPUT_FILE_NAME=diska:[ccmail.pmdf]ccmailny.exp CC_UNDEL_FILE_NAME=diska:[ccmail.pmdf]ccmailny.und CC_POSTOFFICE_HOST=ny.example.com CC_PRIMARY_HOST=ccmail.example.com

or such as these on UNIX

! On UNIX CC_GATEWAY_NAME=NEWYORK CC_OUTPUT_FILE_NAME=diska/ccmail/pmdf/ccmailny.imp CC_INPUT_FILE_NAME=diska/ccmail/pmdf/ccmailny.exp CC_UNDEL_FILE_NAME=diska/ccmail/pmdf/ccmailny.und CC_POSTOFFICE_HOST=ny.example.com CC_PRIMARY_HOST=ccmail.example.com

Here, CC_POSTOFFICE_HOST is the name of the host corresponding to the pseudo post office. Mail addressed to that post office will be rerouted to the host specified by CC_POSTOFFICE_HOST. In this case, the NEWYORK post office is rerouted to ny.example.com.

CC_PRIMARY_HOST is the name of the real cc:Mail gateway, e.g., ccmail.example.com in the examples of Section 38.5.3.2. CC_POSTOFFICE_HOST defaults to PMDF's official local host name while CC_PRIMARY_HOST defaults to the official name associated with this cc:Mail channel.