Peter Uetrecht via Postfix-users:
> Hello everyone,
>
> I need an easy way to add a custom header that depends on the domain part
> of the envelope rcpt to. If the receiving domain matches the custom header
> should be added. I know about header_checks, but that can?t be used because
> the receiver is not included in the header to.
Use a PREPEND action in a Postfix access table.
If it is for one user:
/etc/postfix/main.cf:
... check_recipient_access inline:{
{u...@example.com PREPEND X-Foo: Bar}} ...
If it is for multiple users:
/etc/postfix/main.cf:
... check_recipient_access hash:/etc/postfix/recipient-prepend ...
/etc/postfix/recipient-prepend:
al...@example.com PREPEND X-Foo: something for alice
b...@example.com PREPEND X-Foo: something for bob
If the prepended text has a copy of the recipient:
/etc/postfix/main.cf:
... check_recipient_access pcre:/etc/postfix/recipient-prepend/pcre ...
/etc/postfix/recipient-prepend/pcre:
/(.+)/ PREPEND X-Foo: something for $1
Postfix is primarily a table-driven system. The approach has
limitations but it is also very expressive.
Wietse
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