[pfx] Re: Postfix sending to undefined (?)
On Sun, Jul 02, 2023 at 07:51:11PM -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 Your questions are adequately covered in the above if your needs are not particularly sophisticated. > 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) As documented "relayhost", when non-empty, is the default nexthop for *remote* deliveries. It has no effect on local delivery (be it for "local" or "virtual mailbox" domains) or when an explicit nexthop is specified by other means (see second table at): http://www.postfix.org/ADDRESS_REWRITING_README.html#resolve > So, since "mydestination" did not define any local domains, the next > destination, in this case, would be "the internet". Yes, or in Postfix terms the "default" address class and its associated "default_transport". The list of nexthop sources in descending precedence order is then (from the linked table): transport_maps, sender_dependent_default_transport_maps, default_transport, sender_dependent_relayhost_maps, relayhost, recipient domain Any explicit nexthop will override "relayhost", which only overrides the implicit nexthop based on the recipient domain. -- Viktor. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Postfix sending to undefined (?)
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
[pfx] Re: Postfix sending to undefined (?)
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. > 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"). -- Viktor. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Postfix sending to undefined (?)
> 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 > >Viktor. > Thanks for the reminders. Delivery issue appears to have been to undefined relay_domains and relayhost I now suspect the "wrong destination" was accounted for by a postfix DNS lookup to resolve that on it's own? No pun intended. joe a. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
[pfx] Re: Postfix sending to undefined (?) relay
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 Most likely a failure to list the recipient domain in one of: mydestination virtual_mailbox_domains virtual_alias_domains To elicit specific advice: https://www.postfix.org/DEBUG_README.html#mail specifically post verbatim output (with all linebreaks and whitespace preserved) from each of: $ postconf -nf $ postconf -Mf plus mail logs for the "misrouted" delivery. -- Viktor. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
