Messages in this thread |  | | Date | 08 Sep 2001 15:16:00 +0200 | From | (Kai Henningsen) | Subject | Re: notion of a local address [was: Re: ioctl SIOCGIFNETMASK: ip alias |
| |
saw@saw.sw.com.sg (Andrey Savochkin) wrote on 07.09.01 in <20010907112935.A26353@castle.nmd.msu.ru>:
[MTA]
> But how do you check for the destination IP being in the "local ones"?
Exim does it like this (approximately):
1. There is a list of domains considered "local".
2. There is an option that means the list will automatically contain the local hostname
3. There is another option that says the list will automatically include the [] notion of local interface addresses, as determined the usual way
4. The admin can add to that list anything (s)he wants.
(Note: 2 and 3 are both optional!)
As for netmasks: just use netmask notation when configuring how to treat hosts (such as who to allow relaying for). The probability that looking at the local network interfaces gives the right answer is close to zero.
MfG Kai - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |