This is the log , wthen I try to send from outlook
Dec 18 13:15:21 mail postfix/smtpd[23110]: DCCB62E1167: client=unknown[188.51.67.251], sasl_method=LOGIN, sasl_username=nasser-energyaksa.com
Dec 18 13:15:22 mail postfix/cleanup[23114]: DCCB62E1167: message-id=!&!AAAAAAAAAAAYAAAAAAAAAO+yyG1fQLJDuXKm8Zilk1jCgAAAEAAAADWymmXK80xKit5xhrDI+WABAAAAAA==@energyaksa.com
Dec 18 13:15:22 mail postfix/qmgr[12108]: DCCB62E1167: from=nasser@energyaksa.com, size=23039, nrcpt=1 (queue active)
Dec 18 13:15:24 mail postfix/smtpd[23110]: disconnect from unknown[188.51.67.251]
Dec 18 13:15:31 mail postfix/smtp[23208]: DCCB62E1167: to=a.hashem@EL-SEIF.COM.SA, relay=mail.EL-SEIF.COM.SA[88.85.253.188]:25, delay=9.9, delays=0.32/0/8.4/1.2, dsn=5.0.0, status=bounced (host mail.EL-SEIF.COM.SA[88.85.253.188] said: 550 Requested action not taken: mailbox unavailable or Anti-spam Action (in reply to end of DATA command))
Dec 18 13:15:31 mail postfix/cleanup[23114]: CCE512E19B9: message-id=20131218101531.CCE512E19B9@mail.energyaksa.com
Dec 18 13:15:31 mail postfix/bounce[23478]: DCCB62E1167: sender non-delivery notification: CCE512E19B9
Dec 18 13:15:31 mail postfix/qmgr[12108]: CCE512E19B9: from=<>, size=25703, nrcpt=1 (queue active)
Dec 18 13:15:31 mail postfix/trivial-rewrite[23479]: warning: do not list domain energyaksa.com in BOTH mydestination and virtual_alias_domains
Dec 18 13:15:31 mail postfix/cleanup[23114]: D01192E19BE: message-id=20131218101531.D01192E19BE@mail.energyaksa.com
Dec 18 13:15:31 mail postfix/bounce[23478]: DCCB62E1167: postmaster non-delivery notification: D01192E19BE
Dec 18 13:15:31 mail postfix/qmgr[12108]: D01192E19BE: from=double-bounce@energyaksa.com, size=3132, nrcpt=1 (queue active)
Dec 18 13:15:31 mail postfix/trivial-rewrite[23479]: warning: do not list domain energyaksa.com in BOTH mydestination and virtual_alias_domains
Dec 18 13:15:31 mail postfix/qmgr[12108]: DCCB62E1167: removedsize=25703, nrcpt=1 (queue active)