Hi All,

I am setting up a Sendmail box to relay for my local network. The machine does not hadle incomming mail of any kind - it purely relays out.

I would like it to relay purely based on IP's so that anything in the 192.168.1.0/24 network can relay out with no other checks done.

To achieve this I have edited /etc/mail/sendmail.mc and commented out "DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl" I have also added "FEATURE(`accept_unresolvable_domains')dnl" in an attempt to stop Sendmail from doing an rDNS lookup on my IP (They are all local IP's so have no rDNS).

I then edited /etc/mail/access and added:

192.168.1.0 RELAY

Finally I ran "make -c /etc/mail" and restarted Sendmail. Relaying on the localhost works fine, I onyl egt an issue when trying to relay from a seperate machine (Within the 192.168.1.0/24 subnet).

Here's a log extract showing the problem:

It sounds like an rDNS error but I have added the feature to stop it doing this.

Everything else is a vanilla install on CentOS (Red Hat enterprise Rebuild).

Any ideas?

Thanks, Nick

The access table database does not support the standard network/netmask specification or even CIDR specification.

Try the following access table format for your network:
192.168.1 RELAY

Also try adding all your 192.168.1.x ips to /etc/hosts

Cheers
http://www.linuxbrts.com