PMDF Obsolete Features
PMDF-OBS-6.0


Previous | Contents

2.0.2 Multiple gateways on a single channel (multigate, nomultigate)

The interpretation of the multigate channel keyword depends upon the type of channel to which it is applied. In addition to the usages discussed in the PMDF System Manager's Guide , the keyword also has the following special meaning for BITNET channels.

Systems attached to BITNET can use a separate channel to access each individual BITNET gateway and each BITNET system that accepts messages in batch SMTP (BSMTP) format. This can lead to substantial overhead in the PMDF configuration file. The multigate keyword allows gateways and BSMTP systems with similar characteristics to be serviced by a single channel. There is still some overhead because each gateway system and BSMTP system needs a separate entry in the channel block, but this is much less than having multiple channels. See Section 3.8.3 for further details on the use of this keyword.

The multigate keyword tells PMDF to route the message to the daemon mailbox specified by the daemon keyword (described in Section 2.0.1 ) on the system specified in the message's To: address. This differs from PMDF's behavior when the multigate keyword is not used, in which case PMDF routes the message to the official host associated with the channel, not the system specified in the message's To: address.

There are a variety of caveats associated with using the multigate keyword; see the documentation on BITNET gateways in Section 3.7 for additional information. nomultigate is the default.


Previous | Next | Contents