[CentOS] Postfix+sasl Outlook problem.

I have mail server on CentOS 4.1. Sasl authorization for SMTP is
enabled. Thunderbird sends mail, but Outlook get an error 554, Relay
access denied, error number 0x800CCC79

Outlook has a login and password for SMTP enabled.

It is strange, because there is no any sign of authorize in maillog when
Outlook try to send mail.
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D o m i n i k   S k ł a d a n o w s k i