Linux – How to relay mail via Google account using Postfix

linuxpostfix

I want to non local emails to be relayed via my personal Google account and local to delivered to local user.
My configuration is:
/etc/postfix/transport

*            smtp:[smtp.gmail.com]:587

and /etc/postfix/main.cf

[root@media postfix]# cat main.cf
# This file contains only the parameters changed from a default install
# see /etc/postfix/main.cf.dist for a commented, fuller version of this file.
transport_maps = hash:/etc/postfix/transport
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_sasl_mechanism_filter = plain, login
smtp_sasl_security_options = noanonymous
smtp_use_tls = yes

/etc/postfix/sasl_passwd:

[smtp.google.com]:587    myuser@gmail.com:mypass

And after I run:

# postmap transport && postmap sasl_passwd
systemctl restart postfix.service

So now my server try to connect to gmail MX (without success but not deliver email localy

Logs from journalctl:

    Jul 06 18:38:01 media postfix/pickup[31431]: 30714960F8: uid=0 from=<root>
    Jul 06 18:38:01 media postfix/cleanup[31641]: 30714960F8: message- id=<20130706163801.30714960F8@media.localdomain>
    Jul 06 18:38:01 media postfix/qmgr[31432]: 30714960F8: from=<root@media.localdomain>, size=436, nrcpt=1 (queue active)
    Jul 06 18:38:01 media postfix/smtp[31643]: connect to smtp.gmail.com[2a00:1450:4008:c01::6c]:587: Network is unreachable
   Jul 06 18:38:01 media postfix/smtp[31643]: 30714960F8: to=<mackowiakp23@gmail.com>, relay=smtp.gmail.com[173.194.69.108]:587, delay=0.7, delays=0.03/0.04/0.55/0.07, ...M command))
    Jul 06 18:38:02 media postfix/cleanup[31641]: 0B85D960F9: message-id=<20130706163802.0B85D960F9@media.localdomain>
    Jul 06 18:38:02 media postfix/qmgr[31432]: 0B85D960F9: from=<>, size=2555, nrcpt=1 (queue active)
    Jul 06 18:38:02 media postfix/bounce[31646]: 30714960F8: sender non-delivery notification: 0B85D960F9
    Jul 06 18:38:02 media postfix/qmgr[31432]: 30714960F8: removed
    Jul 06 18:38:02 media postfix/smtp[31643]: connect to smtp.gmail.com[2a00:1450:4008:c01::6d]:587: Network is unreachable
    Jul 06 18:38:02 media postfix/smtp[31643]: 0B85D960F9: to=<root@media.localdomain>, relay=smtp.gmail.com[173.194.69.109]:587, delay=0.59, delays=0.02/0.01/0.51/0.06,...M command))
    Jul 06 18:38:02 media postfix/qmgr[31432]: 0B85D960F9: removed
    Jul 06 18:38:40 media auth[31778]: pam_tcb(dovecot:auth): Authentication passed for media from (uid=0)
    Jul 06 18:38:40 media dovecot[1442]: pop3-login: Login: user=<media>, method=PLAIN, rip=192.168.0.2, lip=192.168.0.7, mpid=31779, secured, session=<VZaXcdrgpADAqAAC>
    Jul 06 18:38:40 media dovecot[1442]: pop3(media): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
    Jul 06 18:38:58 media postfix/pickup[31431]: CD15D960F8: uid=0 from=<root>
    Jul 06 18:38:58 media postfix/cleanup[31641]: CD15D960F8: message-id=<20130706163858.CD15D960F8@media.localdomain>
    Jul 06 18:38:58 media postfix/qmgr[31432]: CD15D960F8: from=<root@media.localdomain>, size=430, nrcpt=1 (queue active)
    Jul 06 18:38:59 media postfix/smtp[31643]: CD15D960F8: to=<mackowiakp@op.pl>, relay=smtp.gmail.com[173.194.69.108]:587, delay=0.63, delays=0.02/0/0.54/0.06, dsn=5.5....M command))
    Jul 06 18:38:59 media postfix/cleanup[31641]: BAB0E960F9: message-id=<20130706163859.BAB0E960F9@media.localdomain>
    Jul 06 18:38:59 media postfix/qmgr[31432]: BAB0E960F9: from=<>, size=2541, nrcpt=1 (queue active)
    Jul 06 18:38:59 media postfix/bounce[31646]: CD15D960F8: sender non-delivery notification: BAB0E960F9
    Jul 06 18:38:59 media postfix/qmgr[31432]: CD15D960F8: removed
Jul 06 18:39:00 media postfix/smtp[31643]: BAB0E960F9: to=<root@media.localdomain>, relay=smtp.gmail.com[173.194.69.109]:587, delay=0.66, delays=0.02/0.01/0.56/0.07,...M command))
    Jul 06 18:39:00 media postfix/qmgr[31432]: BAB0E960F9: removed

Any help to make it working?

Best Answer

You have to enable TLS in Postfix's SMTP client, since Google requires it. This is indicated by them in the message Must issue a STARTTLS command.

In /etc/postfix/main.cf, you want something like this:

smtp_tls_policy_maps = hash:/etc/postfix/tls_policy

and then in /etc/postfix/tls_policy:

[smtp.gmail.com]:587 encrypt

The left hand side in tls_policy must appear exactly the same as your relayhost entry in main.cf.

Remember to run postmap on /etc/postfix/tls_policy after creating or changing it as required.

You can find more details in Postfix's TLS documentation.

Refer these links

http://blog.bigdinosaur.org/postfix-gmail-and-you/

http://www.postfix.org/TLS_README.html#client_tls

Related Topic