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Re: unblock port 25



El Miércoles 26 Octubre 2005 19:55, Nagarjuna Rao Cherukuri escribió:
> Hi,
>
>
>
> Can anyone tell me how to enable port 25 in my server? I am able to ping
> to this port as local host, but it is failing when try to ping using
> DNS.
>
>
>
> [root hydlmuk lib]# telnet localhost 25
>
> Trying 127.0.0.1...
>
> Connected to localhost.localdomain (127.0.0.1).
>
> Escape character is '^]'.
>
> 220 hydlmuk.ad.infosys.com ESMTP Sendmail 8.11.6/8.11.6; Wed, 26 Oct
> 2005 23:15:11 +0530
>
> quit
>
> 221 2.0.0 hydlmuk.ad.infosys.com closing connection
>
> Connection closed by foreign host.
>
> You have new mail in /var/spool/mail/root
>
>
>
> [root hydlmuk lib]# hostname
>
> hydlmuk
>
> [root hydlmuk lib]# telnet hydlmuk 25
>
> Trying 172.25.125.203...
>
> telnet: Unable to connect to remote host: Connection refused
>


For some strange reason, your sendmail went down.
Did you look at logs?



>
>
> My nmap output is as follows.
>
>
>
> [root hydlmuk lib]# nmap hydlmuk
>
>
>
> Starting nmap V. 2.54BETA22 ( www.insecure.org/nmap/ )
>
> Interesting ports on hydlmuk.ad.infosys.com (172.25.125.203):
>
> (The 1528 ports scanned but not shown below are in state: closed)
>
> Port       State       Service
>
> 21/tcp     open        ftp
>
> 22/tcp     open        ssh
>
> 23/tcp     open        telnet
>
> 110/tcp    open        pop-3
>
> 111/tcp    open        sunrpc
>
> 143/tcp    open        imap2
>
> 1521/tcp   open        ncube-lm
>
> 5010/tcp   open        telelpathstart
>
> 5680/tcp   open        canna
>
> 6000/tcp   open        X11
>
> 22273/tcp  open        wnn6
>
> 22289/tcp  open        wnn6_Cn
>
> 22305/tcp  open        wnn6_Kr
>
> 22321/tcp  open        wnn6_Tw
>
>
>
> can anyone tell me how to resolve this issue?


Try to run sendmail and run nmap again
What's the output?



-- 
Manuel Arostegui Ramirez #Linux Registered User 295750
Socio de Hispalinux 1813
Red Hat Linux 9, Kernel 2.6.2 ReiserFS
Firma  cifrada
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