redhat 7.2 and sendmail doesn't send mail to the outside world

[Guest_imported]

Hi all:
i just upgraded to redhat 7.2 and configure sendmail 8.11.6-3. Now i can deliver mail locally and receive email from outside world, but never deliver mail to the outside.

<<< 551 5.5.1 Mail rejected
554 5.0.0 Service unavailable
....
Diagnostic-Code: SMTP; 551 5.5.1 Mail rejected

I've consulted all the forums and read all the documentation and made all the changes i think i was able to make (including changing the DAEMON_OPTIONS that came by default, changing de ip address from loopback to my public ip address). Alse i've installed webmin to make all the changes easier!!

Someone could help with this?
Alse there is a machine in the network with an MX record pointing to this redhat 7.2 machine of mine.

Thanks a lot !

 

[LarryTheCucumber]

Look at this page I hope it helps.

http://konus.homeip.net/article.php?sid=58

 

[joebloe]

Check this page; I think it answers your problem (it did mine...) Good luck

http://www.math.uga.edu/~kurlberg/redhat7.1.html