Sendmail Remote Emailer

littlenicker · 05-02-2005, 04:42 PM

How do I set up sendmail to send emails from a remote site?

For example:
I have my personal PC using outlook express. I recieve emails from my isp, and currently send them via my isp's smtp server. However, I would like to send emails from my local server instead of my isps server. When I set my server up (blahblah.yi.org) as my outgoing mail server, it gives this error when I try to send an email:

The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'test@somedomain.com'. Subject 'test', Account: 'test', Server: 'blahblah.yi.org', Protocol: SMTP, Server Response: '550 5.7.1 <test@somedomain.com>... Relaying denied. IP name lookup failed [192.168.1.13]', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79

Where 192.168.1.13 is my computers ip on my local network. My server is running slackware 8.1 and sendmail is running. This is the startup for my servers sendmail:

/usr/sbin/sendmail -bd -q15m

If anyone wonders, my ISP has a very small cap on the size of attatchment I can send via their server and I have to send larger files. I'm sure others would like to do this same thing. So, anyone have any ideas on how to fix this?

Any help would be greatly appreciated!

killerbob · 05-02-2005, 05:20 PM

The solution to your file can be found in /etc/mail/access...

Code:

root@alice:/etc/mail# cat access
192.168.x.1    OK
192.168.x      RELAY
root@alice:/etc/mail#

OK means accept connections but no relay. 192.168.x.1 is my firewall, and I'm forwarding port 25 to the mail server to allow inbound mail. The rest of it is my internal network, which allows relay.

After you've created/edited this file, run "make", and restart the server.

HTH

littlenicker · 05-03-2005, 10:44 AM

Thanks for the reply. I found that would work great with Slackware 9+ but not 8.1-. However, i did find an answer to my question. Here it is for anyone who has this same question...

solution for slackware 8.1-:

create a file called "relay-domains" in "/etc/mail" and simply add the IP Addresses or subnets you wish to allow email relaying from. this is what my file has in it:

root@Goliath:/etc/mail# cat relay-domains
192.168.1
root@Goliath:/etc/mail#

killerbob · 05-03-2005, 12:36 PM

That's more of a Sendmail version thing than a Slackware version thing. You should really consider updating to a more recent version of Sendmail.

Glad it's working, though.