NS8 Smarthost for sending mail

Feature
15

I needed to configure a smarthost but I didn’t use smtp_tls_policy_maps so here is what I did for a working smarthost:

Enter the mail instance environment, in my case mail1:

runagent -m mail1

Create the file smarthost.cf by using vi in the container…

podman exec -ti postfix vi main.cf.d/smarthost.cf

…and add following content:

relayhost = [your.smarthost.tld]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = lmdb:/etc/postfix/main.cf.d/relay_pass
smtp_sasl_mechanism_filter = plain, login
smtp_sasl_security_options =

Create the file relay_pass…

podman exec -ti postfix vi main.cf.d/relay_pass

…with following content like smarthost username:password:

your.smarthost.tld markus:SeCrEt

Create the lmdb file:

podman exec -ti postfix postmap main.cf.d/relay_pass

Restart postfix:

systemctl --user restart postfix

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