Cannot receive email from root account

Dear all,

The sendmail under redhat 9 runs normally, However, recently, the root
account cannot receive email while the others do.

The following is the test and the result to the mail server, please give me
some advice, thanks

Regards,
John.


[root@ns mail]# telnet 10.0.0.10 25
Trying 10.0.0.10...
Connected to ns.xx-xx.com (10.0.0.10).
Escape character is '^]'.
220 ns.xx-xx.com ESMTP Sendmail 8.12.8/8.12.8; Tue, 18 Sep 2007 12:37:08
+0800
mail from:<root@xx-xx.com>
250 2.1.0 <root@xx-xx.com>... Sender ok
rcpt to:<root@xx-xx.com>
550 5.1.1 <root@xx-xx.com>... User unknown

On Tue, 18 Sep 2007 12:43:42 +0800, "John" <Johnlee@yahoo.com> wrote:

>The sendmail under redhat 9 runs normally, However, recently, the root
>account cannot receive email while the others do.

Please stop crossposting sendmail questions to comp.mail.imap.


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Am Tue, 18 Sep 2007 12:43:42 +0800 schrieb John:

> Dear all,
>
> The sendmail under redhat 9 runs normally, However, recently, the root
> account cannot receive email while the others do.
>
> The following is the test and the result to the mail server, please give
> me some advice, thanks

First of all you should migrate to a current Linux release. RHL9 is EOL
since years and this way it lacks important security fixes.

> Regards,
> John.
>
>
> [root@ns mail]# telnet 10.0.0.10 25
> Trying 10.0.0.10...
> Connected to ns.xx-xx.com (10.0.0.10). Escape character is '^]'.
> 220 ns.xx-xx.com ESMTP Sendmail 8.12.8/8.12.8; Tue, 18 Sep 2007 12:37:08
> +0800
> mail from:<root@xx-xx.com>
> 250 2.1.0 <root@xx-xx.com>... Sender ok rcpt to:<root@xx-xx.com>
> 550 5.1.1 <root@xx-xx.com>... User unknown

sendmail -bv root@xx-xx.com

Alexander