Wietse Venema wrote:
Ed W:
Wietse Venema wrote:
If you don't want to receive mail for domain-less addresses then
say so, instead of coming up with the wrong solution for the wrong
problem.
OK, "I want to accept most emails over smtp and then later bounce emails
with domain-less addresses"
That will not be supported. Adding a separate code path for
domain-less envelope adresses would open a giant hole in the
defenses.
Instead, you can try to 1) configure Postfix smtpd to use an
"invalid" myorigin value, 2) configure Postfix smtpd with a
non-default rewrite_service_name setting that invokes a trivial-rewrite
server that also uses that "invalid" myorigin value and no transport
map, 3) configure the normal trivial-rewrite server with a transport
map that routes mail for the invalid domain to "error: pebcak".
I'm going to give that a whirl - couple of questions:
- What are the implications of setting myorigin to something invalid?
Will this leak out in any other mail headers from locally generated
email (I believe it's all submitted over smtp - possibly except cron..)?
Will other bounces/errors suddenly get the invalid domain as the sender
address?
- Why do I need 2), ie the custom rewrite_service? For other common
domain typos I have just used a normal transport map mapped to some
useful "error: learn to smell correctly" message? What am I missing?
- What bad things happen if I set append_at_myorigin=no ?? The docs
hint at dire consequences, but not specifically what will break?
- For my own edification can you please point out what part of postfix
is actually rewriting these domain-less emails (presumed trivial-rewrite
called from cleanup?) - I have read through ADDRESS_REWRITING_README and
it implies that $myorigin is appended to "local" messages and
$remote_header_rewrite_domain is appended to incomplete remote
addresses. Since I have the later set to blank then this implies that
either this "remote" email is being treated as local (why?) or that
postfix further falls back to using myorigin to complete domainless
address on remote emails also?
I think the core of this is that I'm confused as to what counts as a
"local" generated message - I have tried quite hard to make sure that
almost everything becomes a "remote" submitted message - I accept that
postfix really wants email addresses with a domain, but from the docs
it's not clear what path it's following here to complete the domain?
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: <
office.nippynetworks.com[94.194.201.187]: RCPT TO: <asdf>
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: extract_addr: input: <asdf>
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: smtpd_check_addr: addr=asdf
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: send attr request = rewrite
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: send attr rule = local
Dec 8 11:28:28 mail1 postfix/smtpd[22673]: send attr address = asdf
^^ Why does it think it's a "local" lookup? This seems to prevent me
using $remote_header_rewrite_domain to add "domain.invalid"?
Thanks
Ed W
