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Gary CroxfordFlag for United Kingdom of Great Britain and Northern Ireland

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Able to Access Some Websites but not others

THank you for looking at my question,

We have had a new server - OS MS Small Business Server 2011 - installed. There are some small teething problems one of which is that users can access some websites but not others

Eg can access experts-exchange, bbc.co.uk, google - can't access easyjet.com, santander.com

This is happening at the server too.

resolved the easyjet address to an ip address and tried linking to that from the IE address bar but that doesn't work either

have also flushed server dns

don't know where to go next
Avatar of Jeffrey Kane - TechSoEasy
Jeffrey Kane - TechSoEasy
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If you can ping them, then most likely it's your MTU settings.  If the settings are mis-matched on your NIC, Firewall, and within Windows, you can get these kind of errors.  MTU should be set for no more than 1492 in all places.

You can easily modify the MTU on the NICs and within Windows with DrTCP:  www.dslreports.com/drtcp
The router needs to be set from it's control panel.

Jeff
TechSoEasy
FYI, this is similar to what I've suggested here:  http:Q_21963681.html

Jeff
TechSoEasy
Avatar of Gary Croxford

ASKER

>Techsoeasy
Jeff,

can't ping those addresses i can't access
Can you please post a complete ipconfig /all from both your server and a workstation?

Thanks.

Jeff
TechSoEasy
ASKER CERTIFIED SOLUTION
Avatar of Abbas Haidar
Abbas Haidar
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run http://intodns.com and post the results
>absi81

Has worked like a charm for me also