Thanks! That worked!
-----Original Message-----
From: [email protected] <[email protected]> On
Behalf Of Viktor Dukhovni
Sent: Monday, April 1, 2019 12:46 PM
To: [email protected]
Subject: Re: Alias and local delivery issues (Edited)
On Mon, Apr 01, 2019 at 05:22:08PM +0000, Randall R. Sargent wrote:
> I have an alias system that I need to deliver some mail via relay, and
> some locally for PAM accounts. The local PAM accounts are not in the
> aliases file and their mail is delivered successfully via dovecot-lda
> (mailbox_command = /usr/libexec/dovecot/dovecot-lda -f "$SENDER" -a
> "$RECIPIENT").
While this generally works, far more robust is to use LMTP and
mailbox_transport = lmtp:unix:/path/to/dovecot/lmtp/socket
with Dovecot's LMTP server on the other end of the socket.
> The problem is when I have an alias that doesn't refer to a canonical
> address immediately and Postfix assumes it must be a local account:
1. My advice is to do *all* address-to-address aliasing via
virtual_alias_maps, with only pipe aliases, owned-lists,
and ":include:" aliases in aliases(5).
2. Even further, only use the local(8) delivery agent for
specifically designated addresses, by setting:
mydestination = localhost.$mydomain
myorigin = $mydomain
append_dot_mydomain = yes
and explicitly rewriting (virtual_alias_maps) just
the addresses you want for local(8) processing:
[email protected] user@localhost
> Billadmin: bill.smith
> William: bill.smith
With "$myorigin" not listed in $mydestination, the RHS of aliases(5) entries
that are not explicitly qualified with @localhost (really @localhost.$mydomain
given append_dot_mydomain=yes) are not treated as "local" and get forwarded
back into the queue for reprocessing via virtual alias expansion and indirect
delivery. This avoids multiple delivery problems when one user is over quota,
because each expanded recipient gets a separate queue file entry, and gives
more consistent alias expansion.
The only downside is potential loops, but with just pipes, commands and lists
in aliases(5) the odds of loops are low.
> Bill.smith: bill.smith1 -at- abc.com
>
> If I send an email to bill.smith -at- abc.com it works. If I send an
> email to billadmin -at- abc.com or William -at- abc.com the error I
> get is "bad recipient address syntax: bill.smith@/etc/mailname"
Don't set "myorigin = /etc/mailname", that's a Debianism that does not appear
to work on your system.
--
Viktor.
