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Originally Posted by phoenix Come on, it's not that difficult to find. 
Have a look in the Global Settings/MTA tab and it's called 'Enable DNS lookups'. |
oh...yes..i found it. and default is checked.
now, i have two PC, two both are zimbra server, but one for testing.
Everything are ready, can use webmail, pop and smtp. But the live server can't, i don't know what problem is.
The main different of two server is testing server connect internet directly, and the live server is behind the firewall that only can send mail but can't receive in web mail.
Have any idea?