can't send/receive email outside my network

[joseray]

i have 2 week not sleep to solved this problem....

i can't send/receive email from or to other network

i had search anywhere but not found

my error log

Nov 25 13:01:31 tisonet imapd: Connection, ip=[::ffff:127.0.0.1]
Nov 25 13:01:31 tisonet imapd: LOGIN, user=andrian@tisonet.net, ip=[::ffff:127.0.0.1], port=[33556], protocol=IMAP
Nov 25 13:01:31 tisonet imapd: LOGOUT, user=andrian@tisonet.net, ip=[::ffff:127.0.0.1], headers=0, body=0, rcvd=87, sent=393, time=0
Nov 25 13:01:33 tisonet postfix/pickup[2901]: CC0583FC529: uid=0 from=<root>
Nov 25 13:01:33 tisonet postfix/cleanup[2909]: CC0583FC529: message-id=<20091125060133.CC0583FC529@tisonet.tisonet.net>
Nov 25 13:01:33 tisonet postfix/qmgr[2900]: CC0583FC529: from=<root@tisonet.tisonet.net>, size=312, nrcpt=1 (queue active)
Nov 25 13:01:45 tisonet postfix/pickup[2901]: 4064B3FC531: uid=0 from=<root>
Nov 25 13:01:45 tisonet postfix/cleanup[2909]: 4064B3FC531: message-id=<20091125060145.4064B3FC531@tisonet.tisonet.net>
Nov 25 13:01:45 tisonet postfix/qmgr[2900]: 4064B3FC531: from=<root@tisonet.tisonet.net>, size=313, nrcpt=1 (queue active)
Nov 25 13:01:45 tisonet postfix/virtual[2917]: 4064B3FC531: to=<andrian@tisonet.net>, relay=virtual, delay=0.02, delays=0.02/0/0/0, dsn=2.0.0, status=sent (delivered to maildir)
Nov 25 13:01:45 tisonet postfix/qmgr[2900]: 4064B3FC531: removed
Nov 25 13:02:49 tisonet postfix/smtp[2903]: 2B92A3FC530: to=<vivie@atikom.co.id>, relay=mail.atikom.co.id[203.117.89.46]:25, delay=1260, delays=1172/0.01/2.2/85, dsn=4.1.8, status=deferred (host mail.atikom.co.id[203.117.89.46] said: 450 4.1.8 <root@tisonet.tisonet.net>: Sender address rejected: Domain not found (in reply to RCPT TO command))
Nov 25 13:02:57 tisonet postfix/smtp[2911]: CC0583FC529: to=<vivie@atikom.co.id>, relay=mail.atikom.co.id[203.117.89.46]:25, delay=84, delays=0.02/0/0.13/84, dsn=4.1.8, status=deferred (host mail.atikom.co.id[203.117.89.46] said: 450 4.1.8 <root@tisonet.tisonet.net>: Sender address rejected: Domain not found (in reply to RCPT TO command))



pls...help me.....

thanks for reply