[SOLVED] Urgent help needed

Dear Uxbod and Phoenix,

The problem still exits.I can send mail internally but i cant sent to external domains.All the mails are seen in the active window of the mailqueue in the admin panel.

Code:

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su - zimbra
zmcontrol stop
exit
echo 0 > /proc/sys/net/ipv4/tcp_window_scaling
su - zimbra
zmcontrol start

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Thanks a lot Uxbod.I have no words to express this.Finally its working.
Iam in this forum for the last 3 hours and uxbod and Phoenix are helping in a tremendous way.Iam sure that nobody can beat zimbra if every users like me get such a speedy support.Thanks once again .:):):):)

But can you say that how this problem happened?
What is the actual problem?
If you dont mind .

Any upgrades to routers been performed recently ? TCP window scaling and broken routers [LWN.net]

Quote:

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Originally Posted by uxbod

Any upgrades to routers been performed recently ? TCP window scaling and broken routers [LWN.net]

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Iam using ipcop firewall .Think that i have been changed(not sure) any firewall settings.What should i do for not repeating this.