System Support:
> The PREPEND action can add a single header to outgoing mail. Is
> there a way to add multiple
> headers?
As implemented, there is one PREPEND action per rule, so you would
need multiple rules. If this is smtpd_mumble_restrictions you can
do one rule in smtpd_data_restrictions and one elsewhere (but not
smtpd_end_of_data_restrictions because by then the message is already
received).
You could use a Milter (Python, Perl, or other) to add any number
of headers.
I have an unfinished implementation for multiple actions in access
maps or header/body_checks. Instead of "prepend foo" you would say
"{prepend foo} {prepend bar}". This may be completed in the Postfix
3.1 development cycle.
Wietse
