I have two gmail accounts, and I want to configure my local postfix server as a client which does SASL authentication with smtp.gmail.com:587 with credentials that depend on the sender address.
So, let's say that my gmail accounts are: acc1@gmail.
com and acc2@gmail.
com. If I sent a mail with acc1@gmail.
com in the FROM header field, then postfix should use the credentials:
[email protected]:psswd1 to do SASL authentication with gmail SMTP server. Similarly with acc2@gmail.
com, it should use
[email protected]:passwd2. Sounds fairly simple.
Well, I followed the postfix official documentation at http://www.postfix.org/SASL_README.html, and I ended up with the following relevant configurations:
/etc/postfix/main.cf
smtp_sasl_auth_enable = yes
smtp_sasl_security_options = noanonymous
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sender_dependent_authentication = yes
sender_dependent_relayhost_maps = hash:/etc/postfix/sender_relay
smtp_tls_security_level = secure
smtp_tls_CAfile = /etc/ssl/certs/Equifax_Secure_CA.pem
smtp_tls_CApath = /etc/ssl/certs
smtp_tls_session_cache_database = btree:/etc/postfix/smtp_scache
smtp_tls_session_cache_timeout = 3600s
smtp_tls_loglevel = 1
tls_random_source = dev:/dev/urandom
relayhost = smtp.gmail.com:587
/etc/postfix/sasl_passwd
acc1@gmail.
com [email protected]:passwd1
acc2@gmail.
com [email protected]:passwd2
smtp.gmail.com:587
[email protected]:passwd1
/etc/postfix/sender_relay
acc1@gmail.
com smtp.gmail.com:587
acc2@gmail.
com smtp.gmail.com:587
After I'm done with the configurations I did:
$ postmap /etc/postfix/sasl_passwd
$ postmap /etc/postfix/sender_relay
$ /etc/init.d/postfix restart
The problem is that when I send a mail from acc2@gmail.
com, the message ends up in the destination with sender address acc1@gmail.
com and NOT acc2@gmail.
com, which means that postfix always ignores the per-sender configurations and send the mail using the default credentials (the third line in /etc/postfix/sasl_passwd above). I checked the configurations multiple times and even compared them to those in various blog posts addressing the same issue but found them to be more or less the same as mine. So, can anyone point me in the right direction, in case I'm missing something?
Many thanks.
