On Thu, 2002-10-24 at 18:20, [EMAIL PROTECTED] wrote:
> 1.we have loaded RHL 8.0 and configured the server.
> 2.The sendmail 8.12.5 requires MTA and MSA for e-mails.
> 3.We have made sendmail.cf and submit.cf using the m4 macro
> 4.The machine is able to telnet and ping, ftp to other machines however
> mails are neither sent nor received to any e-mail address. It gives the
> error host name lookup failure everytime.Please help and suggest the changes to made 
>for enabling the mail server.
> thanks in advance,

1. Have you set up MX and A records for your machine properly

2. Have you set up an /etc/resolv.conf and/or a local caching nameserver

3. Is there a firewall on yr machine / upstream of you blocking port 25

Post some logs

--suresh


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