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.
multigate keyword tells PMDF to route the message to
the daemon mailbox specified by the
(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.