[Rspamd-Users] A Single DKIM Key Signing for Multiple Domains

[J. Fahrner]

Am 2019-04-09 08:55, schrieb Dismas Axel (Thomas) via Users:
> So it's more about postfix multiple instance, where I need to create 2
> instance of postfix that is incoming and outgoing and only use rspamd
> on the incoming postfix instance.
> 
> Is that so?

In Postfix you have two configuration options: smtpd_milters and 
non_smtpd_milters.
http://www.postfix.org/postconf.5.html#non_smtpd_milters

If you omit rspamd from the second one, outgoing mail should not go 
through rspamd.
(use the submission port for sending mails in MUAs).