On 7/6/2023 5:12 PM, Noel Jones via Postfix-users wrote:
On Jul 6, 2023, at 2:55 PM, joe a via Postfix-users <postfix-users@postfix.org>
wrote:
On 7/6/2023 12:56 PM, joe a via Postfix-users wrote:
On 7/6/2023 8:53 AM, Viktor Dukhovni via Postfix-users wrote:
On Thu, Jul 06, 2023 at 08:32:42AM -0400, joe a via Postfix-users wrote:
While chasing a postfix (version 3.5.9) to dovecot authentication issue,
checked "compiled in" methods:
postconf -a
cyrus
dovecot
postconf -A
cyrus
As expected and documented. Dovecot is only available in the SMTP
server as a verifier, it does not implement the client side of SASL
authentication. There is no problem here.
I'm grasping at straws at this point. Certainly more reading is in order, but
AFAICT, I've followed the documentation at dovecot and postfix exactly (always
problematic for me to some degree these days) yet still find that some users
authenticate and some do not. I can connect without issue to all the dovecot
mailboxes, using Thunderbird as the email client, but can only receive mail for
a few, the rest being rejected.
Those that do not are rejected as unknown user, by postfix side apparently.
For the rejected users, on the dovecot end (while tailing logs) nothing is seen
when attempting to send (to postfix from another box), while dialog is seen for
the accepted users using the same means.
Seems likely that to make progress, I will need to post the various configs,
but hesitate to add clutter and annoy anyone.
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This particular hurdle appears to have been cleared.
Apparently this needed to be added to /etc/postfix/main.cf
local_recipient_maps =
With that added test email is now accepted for all defined users. Gets
delivered, also, which is a plus.
Yet, I remain wary of unseen dangers in the night.
This is the wrong solution. With this setting, postfix will accept mail to any
user address, and you will eventually have a queue full of undeliverable
bounces, plus get listed as a backscatter source.
The correct solution is to give postfix a list of all valid users. The easiest
way to do that is have all users be system users.
— Noel Jones
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Thanks for the reply.
Clearly my knowledge of postfix is weak compared to others. But seems
to me that having all possible mail recipients as system users is not
practical on even systems of moderate user count.
While someone like myself, a quasi dilettante at this stage, with a
system of perhaps 10 user names, could manage that, it would soon become
a nightmare.
One might expect there must be another solution, which escapes ones
notice. Only became aware of the "solution" after combing through the
tall grass of the wild fields of the internet.
In any event, in my case, the email system is not directly exposed to
the internet to receive mail, it fetches mail from defined accounts so
the mentioned issues do not apply.
joe a.
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