Re: [fetchmail-users] query state=2 (SOCKET)

[Rob M. <rob...@gm...>]

On 9/13/06, Roberto Meyer <rob...@gm...> wrote:
>
> Finally I got a couple of errors with single connections.
>
> I've attached a .tgz file with the logs of fetchmail and tcpdump at
> the moment of the errors, and both logs for a well done connection
> too.

A quick scan of the logs show what I'd expect for a networking
problem.  I'll have a look at the text outputs from tcpdump later,
though a quick scan doesn't show anything obvious right now.

> "cat /proc/sys/net/ipv4/tcp_ecn" returns "0" (zero)

Ok, so ECN isn't on so can't be the source of the problem (which is a
confirmation of what I already suspected).

> "ifconfig eth0" returns:
>
> eth0    Link encap:Ethernet  HWaddr 11:50:24:64:09:BE
>           inet addr:201.65.9.43  Bcast:201.65.9.255  Mask:255.255.255.224
>                                                    ^^^^^^^^^^^^^^^^
> I noticed here broadcast address is wrong... could this be hurting
> packets or fetchmail connections? It should be 201.65.9.63 because of
> the netmask...

Well, that won't matter to fetchmail.  It'll only matter when
something does a broadcast (like DHCP).

> Thanx a lot for your help.

So far, everything seems to point to intermittent network problems
somewhere in the path from your host to the remote POP server.  It
could be that the other software doesn't report these errors, or it
could be that something about the network topology means they take a
different route...

Once I've had the time to take a better look at the tcpdump output
I'll get back to you.

-- 
                 Please keep list traffic on the list.

Rob MacGregor
      Whoever fights monsters should see to it that in the process he
        doesn't become a monster.                  Friedrich Nietzsche