On Tue, 24 Mar 2026 00:10:31 +1100 Viktor Dukhovni via Postfix-users <[email protected]> wrote:
> Mailbox delivery via LMTP is not SMTP relaying to another domain > for subsequent additional store and forward processing. What if in the future I need to map multiple domains to different Dovecot servers, for better load distribution or security: domains A, B, C --> imap1.example.com, imap2.example.com domains D, E, F --> imap3.example.com ... etc. ChatGPT tells me virtual_mailbox_domains is not the best solution, since virtual_transport is limited to one setting for all domains: ----- Begin ChatGPT excerpt ----- main.cf: virtual_mailbox_domains = domain1.com, domain2.com transport_maps = hash:/etc/postfix/transport_maps transport_maps: domain1.com lmtp:[imap1]:24 domain2.com lmtp:[imap2]:24 Now you’re mixing: virtual delivery model (local ownership) transport routing model (relay behavior) Postfix will: classify domains as local (virtual) then override delivery via transport_maps This creates a hybrid behavior that is: confusing non-standard harder to debug ----- End ChatGPT excerpt ----- It suggests I better stick to relay_domains + transport_maps. Does it have a valid point or is it complete nonsense? _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]
