Postfix not sending mail out

[Barry Brimer]

Quoting "mailbox at stanfield.net" <vicki at stanfield.net>:

> After being away from Redhat for some time, I just installed a server
> with postfix--2.4.3-2.fc7. It receives mail ok, but when I try to send
> mail, it stays in the queue with this error:
>
> (Host or domain name not found. Name service error for
> name=fusionalliance.com type=MX: Host not found, try again)
>
> However I can do a host -t MX and find the data for the fusionalliance.
> com mail servers.
>
> Does anyone have an idea why my mail is staying queued?
>
> Vicki

Can you telnet to port 25 on a remote mail system?