Sendmail IP Rewriting All mail not sent from server rejected

[trepidity23]

I am a newbie to sendmail. This is the first attempt at a sendmail server. I have everything setup fine to access the server but when I try to sendmail from a IP address other than that of the server(ie. 192.168.0.100) I get a returned mail error with address look-up failed. Of course it failed bc there is no MX record for the originating IP, but there is for the sendmail server. So how do I handle this issue when accessing the mail server remotely? Is there a way to rewrite the IP to the server's, or is there a better way to go about this. I have webmin, so if you know of a way to handle it through that let me know. Thx so much.

[trepidity23]

I think maybe the above isn't clear. I am trying to setup my own email server using sendmail and dovecot. I have everything setup and working, except when I try to send an email from a remote system using a valid user name and password for the MTA(sendmail). I can recieve mail fine, but when I send it the targeted server(such as bellsouth.net) rejects the mail bc it appears to be coming from the remote computer's IP address. How can I fix this? I get an error 550 everytime. If I send it directly from the server I am ok bc there is an MX record on my DNS servers for that address.

[adrenaline]

OK well it is not broken what you are telling me is that relay is not on that is good. Here is what you need to do

In /etc/mail
you should have a file called access

Edit this file like this

192.168.0.5 (or whatever theip is that is remote)<tab><tab> relay
so it will look like this

192.168.0.5 RELAY

This also works with domains so if you have a domain you can do this too

yourdomain.com RELAY

then once you have edited the file type
make
then restart sendmail
/etc/init.d/sendmail restart

you should be good to go