Problem in Outgoining Mails

[nara_456]

Hi

I have installed Zimbra Mail Server - zcs-6.0.0_GA_1802.UBUNTU8.20090830131715
on ubuntu desktop 8.10 . When i send any mail to outside world like yahoo , gmail
mails are going to spam folder instead of inbox.

can anyone suggest me where is the problem ?

[phoenix]

There could be several reasons but I'd suggest you search the forums first and see if any of the threads answer your question.