Hi there,
2008/3/13, Renaud Allard <renaud@???>:
>
>
> Zbigniew Szalbot wrote:
> > Dear all,
> >
> > I have been getting smtp timeouts from certain domains (mostly Yahoo)
> > and I at first I thought I had been blocked as mail to 90% of other
> > domains is flowing well (gmail, aol, you name it). It took a lot of
> > time to communicate with Yahoo but they have eventually replied
> > stating that they are not blocking us.
> >
> > But even a simple "telnet a.mx.mail.yahoo.com 25" times out. We have
> > never had that issue before. If they are not blocking us, what else
> > could I check to be the cause of networking problems? If it matters, I
> > can telnet yahoo.co.uk and yahoo.co.cn (or yahoo.cn I don't remember
> > now) but they seem to be using different MX-s.
> >
>
>
> Can you try to make a tcptraceroute on port 25 for the IPs of the yahoo
> MXes, it may give you a hint on where you are blocked.
The issue is that no traceroute ever completes successfully:
traceroute 209.191.118.103
traceroute to 209.191.118.103 (209.191.118.103), 64 hops max, 40 byte packets
1 * * *
2 * * *
3 * * *
4 * * *
I also tried traceroute -e 209.191.118.103. Same result.
Our Dlink router has these two enabled:
ping-outbound ICMP: Echo (Ping) Return ICMP Errors
ping-inbound ICMP: Echo (Ping)
No host responds to traceroute commands. Thanks!
--
Zbigniew Szalbot
