Why? A local relay will speed the transfer of e-mail from LAN based workstations by 100 times.
It will also enable unlimited numbers of people in large outgoing lists to be processed.
Finally, it frees up the workstations from the long e-mail chore and gives a central location for
e-mail administration.
How?
If you have a router, make sure that it is in the host table as your gateway:
192.168.1.1 gate.docjava.com gate
Run linuxconf as root.
Make sure your basic host information is correct:
Host name xwww.docjava.com
Adaptor 1
[X] Enabled
Config mode (o) Manual ( ) Dhcp ( ) Bootp
Primary name + domain www.docjava.com
Aliases (opt) lyon www
IP address 192.168.1.101
Netmask (opt) 255.255.255.0
Net device eth0
Kernel module 3c509
I/O port (opt)
Note that the IP address of the SMTP machine is non-routable and is
generally available only on the private net. This disables the spammers
from finding it as a spam relay.
As a result, you can disable relay control, which enables it
for the private office.
Under:
Mail delivery system (sendmail)
Present your system as docjava.com
[X] Accept email for docjava.com
Mail server
Mail gateway
Mail gateway protocol smtp
Features
[ ] match full user name
[ ] Enable relay control (spammers)
Messages size limit (o) No limit __________
[ ] Don't try to deliver immediatly
Process queue every (minutes) 1
[ ] Use special shell smrsh
Maximum recipients per msg. (o) Defaults __________
DNS features
[ ] wait for DNS
No, DON'T Enable Relay control, unless your machine is visible
to the outside world. If you enable control, other machines
in the office will not be able to relay with the linux machine.
If you disable control, make sure your machine is NOT
accessable from the outside world (block the spammers!)...