On Tue, 6 Sep 2005, Dominik Skadanowski wrote:
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.
It's my experience that the most recent versions of Outlook (the one bundled with MS Office) no longer handle TLS gracefully. I've had to reconfigure Outlook to send with straight SSL over port 465.
I have disabled TLS and still the same.
You disabled it where? On the client? On the server? Chances are, there are tweaks necessary on both sides:
client -> use SSL and port 465 server -> open SSL-only (smtps) port 465
At this point, however, I'll have to let a real Postfix admin answer questions...