Yahoo! Web Mail problem

No, As mentioned in the original question, evrything else is hunky dory.

That's a good idea. I'll check it.

The Dlink router has a built in firewall. We can open whatever ports we want. The problem is which port to open. We are not going to open them all, and if a specific port needs to be open for Yahoo! web mail, we should be able to find that information at Yahoo!, but we can't.

I'll also try temporarily turning the firewall off to see if that's the problem.

Thanks, Bill

Bill,
It may also be a routing issue, if your router is only proxying ports 80 / 443 then your may have to configure extra proxy ports in your router. For general mail this is pop3 (110/tcp inbound) and smtp (25/tcp outbound)

No need to down your firewall, all you need is port 80 for yahoo! web mail. And port 80 is already opened since you can surf the internet hunky dory.

Check the proxy settings. Should be all untick (not using any proxyie) for DSL connection.

Liddler,
Several email accounts on the businesses domain are already in use using Outlook, so the ports are open.

Daveteh,
Do you mean proxy settings for the browser? They are off, no proxy for the browser. Or did you mean something else?

The router has the standard default ports open: 80, 21, 443, maybe 70 & 1080. I'll double check it.

Yup, no proxies for DSL connection. Not even "Automatically Detect Settings", untick everything.

Today I temporarily set the PC in question as a DMZ on the LAN. Yahoo mail worked fine. So, this tells me that even though port 80 is open for web browsing, some other factor is in play. I created a firewall rule that allows traffic from mail.yahoo.com on all ports. It is working fine. I don't like having all those ports open, even for just the one WAN address, but I am unable to find any info on which port specifically needs to be open.

When I have a few extra minutes, I may by process of elimination try to figure out exactly what port is required.

BTW, This is an XP PC and the XP firewall for the connection is OFF.

The LAN is nothing but the router and the ADSL modem. The router was at all default settings until I set the PC address as DMZ in the router interface.

I know how this is supposed to work, with web mail and HTTP on port 80. Clearly something else is a t work here.

If a software firewall were in effect on the PC, opening up the firewall on the router would not have any affect on it.

COrrect.  Very odd.  Don't think I can help.  Sounds like it might be an all-around timing issue, but no rea; way to diagnose.

Have you tried running a sniffer and comparing what the traffic looks like from the XP machine accessing Yahoo compared to another machine accessing the same Yahoo account?

Even I had the same Problem.
This problem was because I had all default setting.
Solution is very simple.

1. Goto Router homepage
2. Select Wan (Home ->Wan)
3. If you are you are using DSL select PPPoE, Type in your user id and password.
4. Click apply.
It will restart your router.
You are all set....!!!

Happy Net Surfing.
Murali

Dude, If that hadn't already been done, we wouldn't be able to surf at all.

This can even be done with out selecting PPPoE.

I was using Dynamic IP. I was able to surf other sites except webmail of aol, yahoo mail and few other sites. Then I changed WAN setting now its working fine.
I tried resetting to Dynamic IP instead of PPPoE, i got the same problem.

I Guessed this was the solution to this.
Now im able to surf yahoo.

Do you still have that problem??

In our area, using BellSouth ADSL, it is not possible to surf the internet until authenticated using PPPoE.
Dynamic IP is used for the TW cable service around here, which does not require authentication.

Okay !!!

I got your problem
Try changing your MTU 1452.
This will allow you to access all sites.

Hope this solves your problem
Murali

To change MTU goto Home->WAN
Select Dynamic IP
Click Clone MAC Address
Change MTU
and click apply.

Murali