On Sat, Jun 25, 2022 at 10:16:59PM -0300, Luc GMail wrote:
> On Sun, Jun 26, 2022 at 2022-06-26 0:37:16, Viktor Dukhovni wrote:
>
> > A "catch all" handles mail for all names at a domain,
> > even ones you never shared with anyone
>
> Not all names. Only those that have no clear destination, i.e. no
> known user account or virtual mailbox. How do I achieve exactly that,
> please?
It matches all names not matched in full (user@domain) the same set of
rewriting tables. The existence or non-existence of an underlying
account has nothing to do with it.
main.cf:
indexed = ${default_database_type}:${config_directory}/
virtual_alias_maps = ${indexed}virtual
virtual:
# Catch all for all addresses not explicitly listed here
@example.com catchall@...
# Some non-catchall alias
f...@example.com b...@example.com
# Identity map to avoid recursively hitting the catchall
b...@example.com b...@example.com
Note that "b...@example.com" may exist and be a real user, provided
that "example.com" is not a virtual alias domain, while
"b...@example.com" may not exist and then mail to "foo@" and "bar@"
will bounce.
But you don't need a catchall for the problem at hand. Why not just
main.cf:
mailbot_destination_recipient_limit = 1
virtual:
l...@example.com luc@hidden.invalid
transport:
hidden.invalid mailbot
master.cf
mailbot unix n ... pipe
flags=... argv=...
> Every working email server and account is a spam magnet since the 90s.
> My system is not pointless. It's tried, it's tested and it's approved
> with flying colors.
There's no reason that you've explained for catching mail for all
possible addresses at the domain, even ones you've never shared:
luc-wants-s...@example.com
luc-loves-...@example.com
...
> How do I achieve that, please?
You can redirect mail to a script by setting up a pipe(8)
transport that runs the script. The command arguments can
include various snippets of envelope data.
--
Viktor.
