> Is there something like the tcpwrapper or a proxy that can forward the
>stream to, nor another app but to another Sun system entirely? For example, set
>it up in the /etc/inetd.conf for the SMTP port to automatically forward the
>stuff to the port 25 of another machine?
>
> Jim Meritt
plug-gw from the Trusted Information Systems FireWall ToolKit
(TIS FWTK) has the ability to connect incoming TCP connections
to a port on one machine to a port on another machine.
I use this to reconnect finger requests that come in for
<user>@yale.edu (aka eli.cs.yale.edu aka 128.36.0.1 aka 128.36.0.1)
to the finger server port on the host directory.yale.edu.
There is a better method (MXing) to forward SMTP from one host to
another even more transparently, and one which should be supported
by all Internet MTAs such as sendmail (if you are using Sun's
sendmail rather than obtaining and installing 8.7.1 -- I recommend
8.7.1) make sure you are using sendmail.mx rather than the stock
Sun sendmail.
Use your DNS nameserver db to set up an MX record for the host
you wish to have email forwarded to another host. If the incoming
e-mail is coming in from the Internet you should probably protect
sendmail on the mail server host by running the TIS FWTK "smap"
system on the SMTP port (25) rather than sendmail itself.
More info is available on TIS FWTK at http://www.tis.com and
ftp://ftp.tis.com/.
- Morrow
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