problem on port 80

[ericson_33]

hello
im a newbie in using zimbra, I have able to install zimbra on debian2.6 sarge and i am able to access the zimbra by typing localhost to my web client which is mozilla. after sometime when i restart again my zimbra at terminal
$zmcontrol start
then
$zmcontrol status
all the process are running...
but when i check my web client
it says attemp failed cannot contact localhost
so i check it by
$nmap ip
it shows all the ports running and i think port 80 is missing
can somebody help me on my problem?
also it would be much appreciated if you can post a step by step guide...
tnx in advance...

[jholder]

Try running a:
lsof | grep TCP
and see if your system is binding to port 80.