On Mon, Jul 08, 2024 at 10:44:46PM -0700, Simon Thorpe (PST) via Postfix-users
wrote:
> All emails to {alias}@mydomain.com sent onto any of a list of other
> domains, i.e. {alias}@domain1.com, {alias}@domain2.com, etc.
This lists a condition, but no action.
> If I can do this without code and purely in config, perfect.
<this> being what?
General questions about address rewriting are covered in:
https://www.postfix.org/ADDRESS_REWRITING_README.html
The main tool to use is virtual(5) alias mappings, which rewrite each
input address (regardless of "address class") to one or more output
addresses, recursively, terminating a given branch of the search when no
match is found, an address maps to itself, or too many addresses have
resulted from the original input.
https://www.postfix.org/postconf.5.html#virtual_alias_maps
https://www.postfix.org/postconf.5.html#virtual_alias_expansion_limit
https://www.postfix.org/ADDRESS_CLASS_README.html
Related, primarily needed for normalising header addresses in outbound
mail is "canonical_maps". In most cases, avoid "sender_canonical_maps"
and "recipient_canonical_maps".
There's also "smtp_generic_maps", which performs rewriting on output
rather than input, and so cannot affect message routing.
--
Viktor.
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