Can not see *Some* powweb accounts

[MRLefebre]

We have a customer who can not get their email, thru pop or cannot get to webmail.neilconsultants.com However, they CAN get to neilconsultants.com . In addition, they Can NOT get to shortgrass.com or nwpub.com. But CAN get to fastwall.net.

All of these are on Powweb.

Where do I go, how do I start to trouble shoot where the problem is.? it's either a ISP problem or somethign with Powweb servers blocking them. Or both..???????

Additionally, another client that we have, who has the same ISP as the neilconsultants, also are having the same problems, but they can see theirs, which is ALSO on powweb..

Please help....

Thanks,
Mike Lefebre
Shortgrass.com

[B&T]

They all work fine for me. I would bet there is an ISP or PC cache issue. Or maybe an ISP DSN server issue.

[MRLefebre]

Thanks for your quick response...

Any idea, suggestions of how to go about troubleshooting this. Their ISP, which is a place called sofast.net, is saying it's not their problem, that they are not blocking anything.....

We don't know how to go about figuring out where/when/how it's getting blocked, with same ISP at (least) 2 different customers.

Could powweb be blocking some router that it comes thru?

Thanks again,

Mike Lefebre

[stevel]

Ask the customers to do this (assuming a Windows PC):

Start..Run.
Type 'cmd' (no quotes) and click ok.
Type the following two commands and have them send you the output:

nslookup webmail.neilconsultants.com
tracert webmail.neilconsultants.com

Substitute another hostname if appropriate. Post the results here.

There are many possibilities - the data above will help us figure it out.

[knutson]

I've been unable to access anything powweb for 4 days using my ISPs DNS. With calls to Powweb and my ISP, each are pointing fingers at each other. I've been able to get around the issue using a different DNS (than my ISPs) which led me to believe that was my ISPs problem (although they insist it's not them). .....

... HOWEVER, this morning, I'm finding a number of DNS servers than don't resolve the powweb address ...

... I wish I was more savvy with this stuff ... Any insight would be great. I'll follow the thread ...

... 4 days and counting ... If I were a mean man, I'd be really pissed ... but I've been very happy with powweb for the past year and a half ... I'm putting my confidence in them that it will be resolved (no pun intended)

Matt.

[IanS]

I've been unable to access anything powweb for 4 days using my ISPs DNS. With calls to Powweb and my ISP, each are pointing fingers at each other. I've been able to get around the issue using a different DNS (than my ISPs) which led me to believe that was my ISPs problem (although they insist it's not them). .....

... HOWEVER, this morning, I'm finding a number of DNS servers than don't resolve the powweb address ...

... I wish I was more savvy with this stuff ... Any insight would be great. I'll follow the thread ...

... 4 days and counting ... If I were a mean man, I'd be really pissed ... but I've been very happy with powweb for the past year and a half ... I'm putting my confidence in them that it will be resolved (no pun intended)

Matt.Be upset at the right people :D ... Powweb are not always to blame, as you've said here that the DNS servers don't resolve the Powweb address - could all this be linked to the Comcast DNS servers - and the reliance of others on them? A daisy chain effect may be occurring????

[knutson]

... I have no idea whom to get angry at ... hence I'm reserving my wrath ;-)

... but I honestly have no idea how DNS propagation works ... but if indeed a *daisy chain effect* can happen, this thread will begin begin to have it's own propagation :-)

Help!

[IanS]

... I have no idea whom to get angry at ... hence I'm reserving my wrath ;-)

... but I honestly have no idea how DNS propagation works ... but if indeed a *daisy chain effect* can happen, this thread will begin begin to have it's own propagation :-)

Help!Maybe someone who knows how the propagation works fully can comment on my British daisy chain effect, very similar to the dominoe effect - but smells better and looks prettier :D

Based on this simplistic account of propagation here ( http://www.beaverchat.com/forum/style_images/) then I'd say the *daisy chain effect* or *dominoe effect* will happen if a major ISP has bad data in their DNS servers - this will be passed to others - who will in turn pass it on - whilst others will have the correct data - and be passing that data on.... the receivers have no way of knowing if the data is good or bad.

Another explanation, this time prompted by a bad experience with another host can be found here (http://www.infopackets.com/freenewsarticles/dns+propagation.htm)