I feared that. Are there any suitable sendmail wrappers that would provide equivalent functionality?

- Matt


On 12/22/2018 7:47 PM, Viktor Dukhovni wrote:
On Sat, Dec 22, 2018 at 07:32:37PM -0600, Matt Saladna wrote:

I have an odd setup in which each base directory contains a complete
virtual filesystem with potentially overlapping usernames (UIDs are
unique). domain1.com could consist of system user user1 (UID: 500),
user2 (UID: 501). domain2.com could consist of user1 (UID: 502), user12
(UID: 503), and so on. Any mail generated from shell that depends upon
Postfix to append $myorigin will append the server name instead of the
local virtual domain.

Setting $myhostname and $append_at_myorigin backfires with this setup,
because that happens after pickup in trivial-rewrite that operates
outside the virtual filesystem, so the real server name is always used.
Mapping these users via /etc/aliases won't work either since usernames
are not guaranteed to be unique across accounts.

Is there a way to either:

- Log the UID of pickup and rewrite sender based upon it
- Convert the sender into a FQDN before pickup, for example if mail
generates via cron
No, for this you also a separate Postfix instance for each logical
container.  By the time the mail leaves the container it is too
late.

Reply via email to