[SOLVED] Gmail emails problem

[sakal]

Hello , i got last ISPcp OMEGA and i am looking for help with emails.

I got server instaled on : mydomain.com
BUT - i dont want for emails service use my server , i want use gmail aps.

Simple on my server is runing ispCP and website for my domain , BUT emails is running on gmail servers.

All works fine when i log in gmail i can send and receive emails with no problem.
Also when i try open my site from browser i can see my site from my private server. {so dns is configured well}

First problem will come when i try send email NOT from gmail server ,
BUT from my own server.
It is basic script, he try send email about restart of my server after restart. And it is not working

I got some errors in log`s .


Mar 24 13:36:56 mydomain.com postfix/pickup[17281]: B775A20680B5: uid=0 from=<root>
Mar 24 13:36:56 mydomain.com postfix/cleanup[17297]: B775A20680B5: message-id=<20100324133656.B775A20680B5@in.mydomain.com>
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: B775A20680B5: from=<root@in.mydomain.com>, size=353, nrcpt=1 (queue active)
Mar 24 13:36:56 mydomain.com postfix/virtual[17299]: B775A20680B5: to=<lukasp@mydomain.com>, relay=virtual, delay=0.42, delays=0.39/0/0/0.02, dsn=5.1.1, status=bounced (unknown user: "lukasp@mydomain.com")
Mar 24 13:36:56 mydomain.com postfix/cleanup[17297]: C177B20680B6: message-id=<20100324133656.C177B20680B6@in.mydomain.com>
Mar 24 13:36:56 mydomain.com postfix/bounce[17300]: B775A20680B5: sender non-delivery notification: C177B20680B6
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: C177B20680B6: from=<>, size=2011, nrcpt=1 (queue active)
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: B775A20680B5: removed
Mar 24 13:36:56 mydomain.com postfix/cleanup[17297]: C5F2820680B4: message-id=<20100324133656.C177B20680B6@in.mydomain.com>
Mar 24 13:36:56 mydomain.com postfix/local[17301]: C177B20680B6: to=<root@in.mydomain.com>, relay=local, delay=0.02, delays=0.01/0/0/0.01, dsn=2.0.0, status=sent (forwarded as C5F2820680B4)
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: C5F2820680B4: from=<>, size=2136, nrcpt=1 (queue active)
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: C177B20680B6: removed
Mar 24 13:36:56 mydomain.com postfix/virtual[17299]: C5F2820680B4: to=<lukasp@mydomain.com>, orig_to=<root@in.mydomain.com>, relay=virtual, delay=0.01, delays=0.01/0/0/0.01, dsn=5.1.1, status=bounced (unknown user: "lukasp@mydomain.com")
Mar 24 13:36:56 mydomain.com postfix/qmgr[17282]: C5F2820680B4: removed


Is here somebody cleaver enough for this ????
Thanks for all HELP