[cobalt-users] Mail Server Configuration - 4R

["Richard Sidlin" <dns@xxxxxxxxxxxxxxxxx>]

One of my customers has signed up for a service that scans emails before
being delivered. For this to work, I need to change the MX records. No
problem with that. The next section is outside of my knowledge and need
help on. How do I enable the restrictions please?


Inbound Restrictions
It is necessary to configure your mail server to only receive e-mail
from MessageLabs and to deny connections from other sources. The
configurations ranges you must use are:

Accept connection from 194.205.110.***	(subnet mask 255.255.255.224)
Accept connection from 212.125.75.*** 		(subnet mask
255.255.255.248)
Accept connection from 195.216.***. 		(subnet mask
255.255.255.0)
Deny Connection from 0.0.0.0 			(subnet mask 0.0.0.0)

NOTE: If you do not deny connections from other hosts then you could run
the risk of infection by viruses that send themselves directly to an IP
address.

________________________________________
Richard Sidlin
Director Technical Services
Quarryhouse Systems Limited
6 Shenley Road
BOREHAMWOOD
Hertfordshire
WD6 1DL

t: 020 8207 0004
f: 020 8905 1610
mailto:richard@xxxxxxxxxxxxxxxxx