On 7/2/2023 7:07 PM, Viktor Dukhovni via Postfix-users wrote:
On Sun, Jul 02, 2023 at 06:49:53PM -0400, joe a via Postfix-users wrote:
> Viktor Dukhovni via Postfix-users Sun, 02 Jul 2023 14:21:52 -0700
>
>On Sun, Jul 02, 2023 at 05:11:52PM -0400, joe a via Postfix-users >wrote:
>
>> When attempting to send an email to postfix on that box, for delivery >to
>> the local dovecot (via lmtp), the message instead goes out to my ISP in
>> the fashion of currently working email se[r]ver.
>
> https://www.postfix.org/BASIC_CONFIGURATION_README.html#mydestination
> https://www.postfix.org/VIRTUAL_README.html#canonical
> https://www.postfix.org/BASIC_CONFIGURATION_README.html#relayhost
Delivery issue appears to have been to undefined relay_domains and
relayhost.
Seems unlikely, since you were expecting final delivery on the same
machine, and that should never depend on DNS, relay_domains or
relayhost.
Well, I admit to being confused, befuddled and bewildered. That was my
thinking originally, yet, I could not deny the results of the changes I
made.
However, I was wrong, yet again. Reverting my changes, I realized that
I had also altered "mydestination" to include the domains being tested.
Reverting the other changes, shows that "mydestination" seems to have
resolved the problem.
I now suspect the "wrong destination" was accounted for by a postfix
DNS lookup to resolve that on it's own? No pun intended.
No. If you're expecting final delivery via LMTP on the same machine,
then the recipient address needs to ultimately resove to the "local"
or "virtual mailbox" address class, and be delivered via local(8)
(possibly handing off to mailbox_transport, ...) or via
virtaul_transport (be it virtual(8) or "lmtp").
Yet, my still light experience with postfix, leads me to believe having
"relay host" undefined allows delivery to "the internet" if other
"targets" have not been defined or "computable".
Per docs: relayhost = (default: direct delivery to Internet)
So, since "mydestination" did not define any local domains, the next
destination, in this case, would be "the internet". The only way this
machine could have known where to deliver the mail was via MX record. I
hope, anyway! Machine "ESP" would be very scary indeed.
Anyway, not my intent to annoy or belabor, just to gain insight.
Given how configurable postfix is, that may be a lifetime's work.
Thanks for all your assistance.
joe a.
_______________________________________________
Postfix-users mailing list -- postfix-users@postfix.org
To unsubscribe send an email to postfix-users-le...@postfix.org
