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Ok, I have spent many weeks on this send mail thing. I own the domain OasisOne.org. I want to use sendmail to be able to have email accounts at that domain. (ex. firstname.lastname@example.org). I have RedHat9 running on my email server, and it has sendmail and webmin installed. I have a public IP address 198.70.248.* . I run NAT from a router so my webserver has a internal IP address of 192.168.0.116. I have the POP3 port fowarded to the email server in the router. And I have a MX record at godaddy.com pointing to my public IP. Why will this setup not work??? am I not using a correct port someware? Thanks for your help.
the most common problem with a new sendmail setup would be that it does not listen on your external interface by default.
If this is the case you should be able to telnet into it locally but not over the internet or network.
[david@zeus david]$ telnet localhost 25
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 mail.dcphillips.net ESMTP Wassup! Welcome to the mail shredder.
[david@zeus david]$ telnet somewhere.com 25
telnet: Unable to connect to remote host: Connection refused
Last edited by DavidPhillips; 12-10-2003 at 08:58 PM.
yes, to use sendmail as a MTA you need to forward 25 on your router and be sure you have removed the loopback address in the config file. Youll need to tell it to listen on your boxes ip and then make the config file again. Also, if you are running IPtables, make sure ports for pop3 and smtp are open