Outlook (Windows) kann sich nicht am OSX-Mail-Server anmelden

[TatzeBerlin]

Kann mir jemand sagen, wieso sich unsere Outlook-Clients (OL 2000/2010) unter Windows nicht am OS X Server anmelden können? Weder mit noch ohne SSL.
Habe schon diverse Foren-Tipps versucht ins main.cf einzuarbeiten.
Mit Thunderbird (Win + Mac) klappt es.

Hier meine main.cf-Einträge:

#============================
mydomain_fallback = localhost
message_size_limit = 10485760
biff = no
mynetworks = 127.0.0.0/8 192.168.0.0/24
smtpd_client_restrictions = permit_mynetworks permit_sasl_authenticated permit
recipient_delimiter = +
smtpd_tls_ciphers = medium
inet_protocols = all
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
recipient_canonical_maps = hash:/etc/postfix/system_user_maps
smtpd_use_pw_server = yes
smtpd_sasl_auth_enable = yes
content_filter =
inet_interfaces = loopback-only
smtpd_helo_required = no
smtpd_pw_server_security_options = login
header_checks =
smtpd_tls_CAfile = /etc/certificates/p88.ath.cx.06852C03A3737F79875CEF2CE5A3348AF02AB13 C.chain.pem
smtpd_helo_restrictions =
relayhost =
smtpd_recipient_restrictions = permit_sasl_authenticated permit_mynetworks reject_unauth_destination permit
smtpd_enforce_tls = yes
smtpd_use_tls = yes
enable_server_options = yes
smtpd_tls_key_file = /etc/certificates/p88.ath.cx.06852C03A3737F79875CEF2CE5A3348AF02AB13 C.key.pem
smtpd_tls_cert_file = /etc/certificates/p88.ath.cx.06852C03A3737F79875CEF2CE5A3348AF02AB13 C.cert.pem
mydomain = ath.cx
virtual_alias_maps = $virtual_maps
smtp_sasl_password_maps =
smtp_sasl_security_options =
mailbox_transport = dovecot
myhostname = p88.ath.cx
smtpd_tls_loglevel = 0
smtpsasl_authenable = yes


Hat jemand Ideen? Ich werd' bald verrückt, weil ich's nicht verstehe.

 

[tocotronaut]

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