You have two options, really.  You can use the Sendmail options for
"local" IPs...I used to do this with a "LocalIP" file in my /etc
directory, which Sendmail looked into, to see what IPs it could
accept and relay mail.  The other option is to set up reverse DNS,
anyhow, and have it fairly be generic.  For example, you could set it
up like a lot of providers do...

192.168.0.1 could be 192-168-0-1.my.domain.com
192.168.0.2 could be 192-168-0-2.my.domain.com
etc....

On Mon, 8 Jan 2001 13:42:11 +0200 (EET), Alexandru Iruc wrote:

>
>
>I have the following situation:
>an intranet with a dhcp on linux and a gateway (squid) server with ppp on
>leased line for Internet. The stations on the local net have dynamic ip
>from dhcp and because of this I can't set up a local dns. Everything OK,
>but when a user tries to send & check it's mail from one of the stations I
>get this error: dns lookup failure. 
>
>What should I do to correct this?
>
>Thanks
>
>Alex Iruc
>
>
>
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