hi all
I m using MT 2.8.22 router OS it was working fine and now too but since last week to till now i m unable to login our yahoo messenger and yahoo mail services via this router.I also tried same ISP on another router Its a working.
I am using hotspot features of MT router.
Please help me…
what kind of error report while you cannot login to yahoo and yahoo messenger
I have been having alot of greive lately woth Hotmail, Yahoo and a number of other web pages.
I sorted one complex out yeasterday that has had an issue for a little while now.
I had added this mange rule below changing the MSS size that had been recommended on this forum, but it did not solve the problem day before yesterday.
“chain=forward out-interface=ether1 protocol=tcp tcp-flags=syn action=change-mss new-mss=1448”
Then yesterday after the usall calls from customers complaining, as it is there right to complain 
I started to poke the MT box with a stick.
Under PPP Profile, down the very bottem is an option to change TCP MSS. I enabled this and if solved a customers problem with web pages stright away.
But I now have to work out the same way to solve the problem where the customer does not use PPP at the moment.
I had to change the customer we had problems with to PPPoE connection.
Was able to resolve the issue with Hotmail & Yahoo not displaying after setting the MTU & MRU to 1360 after seeing another post with the same results.
No more phone calls from my customers
I have just worked through a similar problem (no Hotmail, no Yahoo mail, certain Internet Banking sites not working) where I have bandwidth coming in through ADSL. After trying the recommended settings on this site I eventually figured out that it will be different depending on what your service provider sets up. After checking out my DSL modem I found a setting for MTU at 1492 and MSS at 1468. Changed the MTU on Mikrotik for that connection and added a preroute mangle to change MSS. Problem sorted!
Regards
David