Hello,
There is nothing that prevents local_recipient_maps from being used elsewhere. The need to do so just hasn't come up.
To be fair, I don’t have any use for this either. It’s just I had a misconfiguration on my side, a user wouldn’t get their mails (well, myself actually, the postmaster), and /usr/sbin/sendmail -bv said all was fine. It don’t think it took me long to find out the issue, though.
As for local_recipient_maps not being checked elsewhere in Postfix: […]
Oh! Now I understand your first reply. I was wondering what you meant back then.
You had not mentioned LMTP.
I don’t think I mentioned anything else either 🙂.
mailbox_transport and _maps were originally used to deliver mail for UNIX and [1] non-UNIX accounts to a [2] Dovecot command-line tool. Both [1] and [2] were poor solutions.
Hmm… I was using LMTP through mailbox_transport: > mailbox_transport = lmtp:unix:private/dovecot-lmtp Is this bad?
This is why the doc mmentions that local_recipient_maps is used by the SMTP daemon.
Indeed, it does. But it doesn’t say it is not used by other processes, or at least I didn’t understand that when reading it.
Anyway, I promised a documentation patch that would make this more explicit, here it is! Sorry it took me a little long to do it, as I have been busy on other issues.
I didn’t see any CONTRIBUTING file with guidelines or how to submit patches, so I hope the attachment on this mail will do it. Also, the "sources" we can download from <https://www.postfix.org/download.html> include the built documentation, so I hope the files I edited under proto/ are the actual documentation sources rather than the result of a first build phase.
Regards, -- Étienne Miret https://etienne.miret.io/
diff -ruN -x README_FILES -x .idea -x html -x man /var/tmp/postfix-3.8.1/proto/LOCAL_RECIPIENT_README.html Documents/Development/postfix-3.8.1/proto/LOCAL_RECIPIENT_README.html --- /var/tmp/postfix-3.8.1/proto/LOCAL_RECIPIENT_README.html 2023-03-09 00:35:26 +++ Documents/Development/postfix-3.8.1/proto/LOCAL_RECIPIENT_README.html 2023-08-28 20:15:41 @@ -57,7 +57,9 @@ local when its domain matches $mydestination, $inet_interfaces or $proxy_interfaces. If a local username or address is not listed in $local_recipient_maps, then the Postfix SMTP server will reject -the address with "User unknown in local recipient table". </p> +the address with "User unknown in local recipient table". +Note that this username may still be able to receive mails from other +sources (like sendmail(1)). </p> <p> The default setting, shown below, assumes that you use the default Postfix local(8) delivery agent for local delivery, where diff -ruN -x README_FILES -x .idea -x html -x man /var/tmp/postfix-3.8.1/proto/postconf.proto Documents/Development/postfix-3.8.1/proto/postconf.proto --- /var/tmp/postfix-3.8.1/proto/postconf.proto 2023-06-05 21:12:17 +++ Documents/Development/postfix-3.8.1/proto/postconf.proto 2023-08-28 20:12:58 @@ -2425,6 +2425,9 @@ <p> If this parameter is non-empty (the default), then the Postfix SMTP server will reject mail for unknown local users. +For now, this parameter is ignored by other processes, which means +a misconfiguration here can lead to a local user receiving mails +from sendmail(1) but not from SMTP clients. </p> <p>
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