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Re: What's blocking Port 25?



On Fri, Jul 30, 2004 at 01:50:08PM +0800, John Summerfield wrote:
> Griffin Palmer wrote:
> 
> >OBTW -- when I try to telnet to port 25 on the new box
> >from the old box, I get "connection refused."
> >
> > 
> >
> That's your problem.
> 
> Here's how to use lsof for this prob:
> ns:~# lsof -c post -a -i
> COMMAND   PID     USER   FD   TYPE DEVICE SIZE NODE NAME
> postmaste 691 postgres    3u  IPv6   2276       TCP *:postgresql (LISTEN)
> postmaste 691 postgres    4u  IPv4   2277       TCP *:postgresql (LISTEN)
> postmaste 691 postgres    6u  IPv4   2286       UDP 
> localhost:1034->localhost:1034 postmaste 695 postgres    6u  IPv4   2286    
> UDP localhost:1034->localhost:1034 
> 

Another thing that may help is netstat. Try running netstat -tulpen
(preferably as root so you can see the program name). It will show you
who is listening on what port and on what address. For me it shows for
exim

Proto Recv-Q Send-Q Local Address           Foreign Address         State       User       Inode      PID/Program name
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN     0          546436     14937/exim4

> -- 
> 
> Cheers
> John
> 
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