I know I am missing something here.

My eth1 ip is set to 192.168.0.7.

In the sendmail.mc file, I have this line: DAEMON_OPTIONS(`port=smtp,Addr=192.168.0.7, Name=MTA-v6, Family=inet6')dnl

And in my hosts file looks like this:
127.0.0.1 backup localhost.localdomain localhost
192.168.0.7 pavilionhome.dyndns.org backup

Not really sure what should be in here. But when I start the sendmail server, i get this error:

Starting sendmail: 554 5.3.0 /etc/mail/sendmail.cf: line 270: host "192.168.0.7" unknown

What am I missing? Thanks.

I apologize beforehand that I am not answering your question.

I am curious as to what may happen if you type "ping backup".

Quiet alright. It pings it with no problem.

Shouldn't it be just:

127.0.0.1 localhost.localdomain localhost


Also have you come across this link: http://www.nmia.com/~glenn/protech/sendmail.htm

Open /etc/mail/sendmail.mc in a text editor.
Find the line that begins DAEMON-OPTIONS and lists the loopback IP address (127.0.0.1).
Type dnl at the beginning of this line. dnl means "delete to new line" - in other words, it comments out what follows.


So in your case you would have:

dnl DAEMON_OPTIONS(`port=smtp,Addr=192.168.0.7, Name=MTA-v6, Family=inet6')

inet6??????? why is it setup for IP version 6?

wait a tick. you want me to comment out 127.0.0.1 or 192.168.0.7?

Woah, that link looks great. Take a look tomarrow when i'm not half asleep.

Thanks.

OK, quick question I hope.

On this page, Link , it says, Well, what if your server was behind a router? No problem correct?.

But, what if you had a dyanmic ip? My domain, imagiro-1.com, is forwarded to the dyndns service, then to my main comp at pavilionhome.dyndns.org. Which IP would I use? Thanks.

Let me clariy my earlier question of "what happens if you ping backup". Which IP address responds?

If your behind a router no problem but if not then you would have to change the ip in /etc/hosts everytime yours changed. But if you have a router just put the ip of the machine acting as the mail server.

Dynamic ip doesn't matter if the mail server sending you mail can find your router through the dyndns service then your router just forwards it to the machine's ip on the LAN. I use a router and just forward port 110 and 25 to my mail server at 192.168.1.6

Shin, you just showed me a huge mistake that I thought was happening. Ping backup gives me an ip of 127.0.0.1. Major reason why I can't send mail.

My hosts file:

127.0.0.1 backup localhost.localdomain localhost
192.168.0.7 imagiro-1.com backup
24.50.15.130 smtp smtp.imagiro-1.com imagiro-1.com

The last ip is my ip assigned to me right now by my isp. Where should "backup" be located?

def, What about recieving mail? I was thinking of using the dyndns server. I read somebody else did that. I'll have to find the post where I read that.