FINALLY it worked, but not before i disabled NTLM in the config, because
otherwise it would try it.
So, i had to enable client side TLS and disabling NTLM. It says untrusted
connection in the logs, and i tried modifying the mynetworks variable below
but couldn't fix it. It may be untrusted because of the invalid exchange
certificate.
For reference, here is the the main.cf i used. I am aware of the obsolete
and unneeded entries.
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
myhostname = helpdesk.seguroscatatumbo.com
relayhost = [mar-exch01.seguroscatatumbo.com]
smtp_sasl_tls_security_options =
smtp_sasl_mechanism_filter = login !ntlm
smtp_use_tls = yes
smtp_tls_loglevel = 1
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_session_cache_timeout = 3600s
smtp_tls_CAfile =
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl/sasl_passwd
broken_sasl_auth_clients = yes
smtp_always_send_ehlo = yes
###
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 192.168.100.0/24
/etc/aliases contains one modification:
root: myuser
/etc/postfix/generic has one line:
r...@helpdesk.ourdomain.com myu...@ourdomain.com
/etc/postfix/sasl/sasl_passwd has one line:
[exchangeserver.ourdomain.com] DOMAIN\myuser:mypass
Now, a final question that isn't exactly relevant to postfix. Can i make
emails sent to come as "myu...@ourdomain.com" instead of the default
"myu...@helpdesk.ourdomain.com"
I am aware that my linux box is called "helpdesk" and that /etc/hosts says:
127.0.0.1 helpdesk
127.0.0.1 helpdesk.ourdomain.com helpdesk
I tried setting the mydestination in main.cf to ourdomain.com but then
postfix didn't try relay to exchange which i guess it's the right behaviour.
I am aware that when i configure the helpdesk i may try just impersonating
the account as helpd...@ourdomain.com without touching anything else.
--
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