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

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

2006/9/13, Rob MacGregor <rob...@gm...>:

> On 9/12/06, Roberto Meyer <rob...@gm...> wrote:
> >
> > Still having problems with it, I decided to put tcpdump in action. The
> > problem is I don't really know much about it. I read the man pages and
> > understood a little about flags, etc. but don't know a lot of tcp/ip.
> >
> > I've attached the output of two connections triggered at the same time
> > for two different users through cron jobs. One of them was successful,
> > the other one failed with a socket, status=2 result.
> >
> > The command I issued was:
> > "tcpdump -v -s1500 -i eth0 -n tcp port 110 -w /tmp/tcpdump.raw"
> >
> > I've attached the 'text' version of it which I rescued through
> > "tcpdump -r /tmp/tcpdump.raw"
>
> Separating the 2 is, sadly, not possible.  If you could capture one
> working run and one failed run then I *may* be able to help work out
> what's going wrong.  It would help to have the binary pcap of the
> failed run, though obviously you'd need to change passwords
> immediately afterwards (or before and after) for security reasons.

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.


> Can you provide the output of "ifconfig eth0" (feel free to mangle MAC
> and IP addresses) and "cat /proc/sys/net/ipv4/tcp_ecn"?

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

"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...

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1240552 errors:34 dropped:0 overruns:0 frame:34
          TX packets:636714 errors:0 dropped:0 overruns:0 carrier:105
          collisions:0 txqueuelen:1000
          RX bytes:397976183 (379.5 MiB)  TX bytes:78105812 (74.4 MiB)
          Interrupt:14 Base address:0xdc00

Carrier error were due to a cable unplug a week ago.

As far as I checked, frame errors don't seem to be directly related to
fetchmail problems.

I'll change broadcast setup, though I didn't write it in
/etc/init.d/interfaces, I only specified address, network and
gateway... I'm surprised Linux didn't calculate it well...

Thanx a lot for your help.

-- 
Roberto