На mail.ru есть ящик - chel@mail.ru. Sasl - вроде настоен.
May 28 18:00:28 localhost postfix/pickup[18429]: 90DB557022E: uid=0 from=<root> May 28 18:00:28 localhost postfix/cleanup[18435]: 90DB557022E: message-id=<20080528120028.90DB557022E@home> May 28 18:00:28 localhost postfix/qmgr[18430]: 90DB557022E: from=<chel@mail.ru>, size=1201, nrcpt=1 (queue active) May 28 18:00:28 localhost postfix/smtp[18437]: 90DB557022E: to=<vad@mail.ru>, relay=smtp.mail.ru[194.67.23.111]:25, delay=0.3, delays=0.02/0.01/0.17/0.11, dsn=5.0.0, status=bounced (host smtp.mail.ru[194.67.23.111] said: 550 spam message discarded. If you think that the system is mistaken, please report details to abuse@corp.mail.ru (in reply to end of DATA command)) May 28 18:00:28 localhost postfix/cleanup[18435]: DD0E7570230: message-id=<20080528120028.DD0E7570230@home> May 28 18:00:28 localhost postfix/bounce[18438]: 90DB557022E: sender non-delivery notification: DD0E7570230 May 28 18:00:28 localhost postfix/qmgr[18430]: DD0E7570230: from=<>, size=3073, nrcpt=1 (queue active) May 28 18:00:28 localhost postfix/qmgr[18430]: 90DB557022E: removed May 28 18:00:29 localhost postfix/smtp[18437]: DD0E7570230: to=<chel@mail.ru>, relay=smtp.mail.ru[194.67.23.111]:25, delay=0.29, delays=0/0/0.25/0.04, dsn=5.0.0, status=bounced (host smtp.mail.ru[194.67.23.111] said: 501 sender address must match authenticated user (in reply to MAIL FROM command)) May 28 18:00:29 localhost postfix/qmgr[18430]: DD0E7570230: removed