Any 1&1 email users?

[madasahatter]

Cheers Sebby 

[Rik]

What Sebby said. Hopefully, I'll hear more today. They did confirm all the affected sites were 1&1 hosted, which would normally make me think the issue was a 1&1 one, but I couldn't find reports anywhere else so...

[Inactive]

I don't think it was 1&1 Rik, ISP Review is hosted there, I asked if anyone else had been unable to access the site, the answer was no.

[Rik]

Thanks, In.

[Rik]

The lovely Miriam has finished checking this:

From office (1 hop more to get to redbus so hop numbers differ)

5  redbus-gw2-g0-1-331.idnet.net (212.69.63.5)  6.394 ms  6.368 ms  6.435 ms
6  amsix.bb-c.nkf.ams.nl.oneandone.net (195.69.144.220)  14.792 ms  25.967 ms 
15.441 ms

This shows that either 1+1 had the problem, the link between Amsix and Redbus
had a problem or Amsix had a problem. Our router graphs seem to indicate no
abnormalities on our link to Amsix and that we were sending a usual amount of
traffic down the link which would seem it was 1+1's link to Amsix that was
the problem. (this would not likely show on 1+1's monitoring system as the
actual servers and their main hosting centre would have been completely up
with full traffic from the main internet - its just the routing from peers at
amsix would that may have had an issue)

[Inactive]

Thanks Rik, that has made it all as clear as mud.

[Rik]

I think I understand - just don't ask me to explain it.

[madasahatter]

Still doesn't really explain how we were able to get to their sites through another proxy though??? 

[Rik]

Different peering being used by the proxy, Mad.

[madasahatter]

get ya - we were just unucky to be using that route then 

[Rik]

Looks that way. How you ever prevent this kind of issue I don't know, short of built-in redundancy at every level.

[Danni]

I think I understand it. I've also has similar problems to my server (and other servers hosted in the same data centre) in the past.

I think that the route IDNet takes to 1and1 goes through Amsix, who were having a routing problem. Accessing through a proxy bypasses Amsix, so it worked fine.

[Rik]

That's how I understand it, Danni. From the IDNet end, the link to Amsix looked fine, from the 1&1 end it looked fine. Somewhere in the middle, things were disappearing into a black hole.

[Danni]

Yup You said you couldn't explain it, so I tried

[Rik]

And succeeded brilliantly. 

[Danni]

Thank you

[Sebby]

Yep, I understood it.

[madasahatter]

Even I understood it Danni - thanks 

[Sebby]

She must be good...

[madasahatter]