> 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. Resolved: Outlook don't use PLAIN authorization. I have added LOGIN to "mech_list" in /usr/lib/sasl2/smtpd.conf /usr/lib/sasl2/smtpd.conf is below: ----------------------------------------------------------------------- pwcheck_method: saslauthd mech_list: plain login saslauthd_path: /var/run/saslauthd/mux ----------------------------------------------------------------------- And Outlook started to use SMTP/SASL, both - over TLS and without TLS. Regards -- ____________________________________________________________________ D o m i n i k S k ? a d a n o w s k i