On 6/1/20 11:16, Gabriele Bulfon wrote:

Hi Jaco, thanks a lot. Here is the output:

Sonicle XStreamOS (powered by illumos) SunOS 5.11 xs_154 June 2016
sonicle@cloudserver:~$ zpool list
NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
data 9.81T 6.80T 3.02T - 58% 69% 1.00x ONLINE -
Consider that this is an illumos zone, which has it's BE inside data, so the root FS is inside the data pool:

sonicle@cloudserver:~$ zfs list
NAME USED AVAIL REFER MOUNTPOINT
data 4.53T 1.80T 7.64G /data
data/cloud 4.48T 1.80T 32.0K /data/cloud
data/cloud/server 227G 1.80T 32.0K /data/cloud/server
data/cloud/server/ROOT 227G 1.80T 32.0K legacy
data/cloud/server/ROOT/zbe 227G 1.80T 187G legacy
data/cloud/server/ROOT/zbe-1 2.84M 1.80T 110G legacy
data/cloud/server/ROOT/zbe-backup-1 3.70M 1.80T 65.2G legacy
data/cloud/server/ROOT/zbe-backup-2 3.40M 1.80T 101G legacy
Gabriele



*Sonicle S.r.l. *: http://www.sonicle.com <http://www.sonicle.com/>
*Music: *http://www.gabrielebulfon.com <http://www.gabrielebulfon.com/>
*Quantum Mechanics : *http://www.cdbaby.com/cd/gabrielebulfon

------------------------------------------------------------------------


*Da:* Jaco Lesch <ja...@saix.net>
*A:* Gabriele Bulfon <gbul...@sonicle.com>postfix-users@postfix.org
*Data:* 1 giugno 2020 10.31.13 CEST
*Oggetto:* Re: 452 4.3.1 Insufficient system storage




    On 6/1/20 09:28, Gabriele Bulfon wrote:

        Also queue_minfree is 0, running postconf, so no check should
        be performed. Right?

        *Sonicle S.r.l. *: http://www.sonicle.com
        <http://www.sonicle.com/>
        *Music: *http://www.gabrielebulfon.com
        <http://www.gabrielebulfon.com/>
        *Quantum Mechanics : *http://www.cdbaby.com/cd/gabrielebulfon



        
----------------------------------------------------------------------------------

        Da: Matus UHLAR - fantomas <uh...@fantomas.sk>
        A: postfix-users@postfix.org
        Data: 29 maggio 2020 17.49.10 CEST
        Oggetto: Re: 452 4.3.1 Insufficient system storage

            On 29.05.20 15:42, Gabriele Bulfon wrote:
            >This in mail.log:
            >May 28 20:09:45 cloudserver postfix/smtpd[21079]: [ID
            197553 mail.info] connect from sender-host[*.*.*.*]
            >May 28 20:09:45 cloudserver postfix/smtpd[21079]: [ID
            197553 mail.info] Anonymous TLS connection established
            from sender-host[*.*.*.*]: TLSv1.2 with cipher
            ECDHE-RSA-AES256-SHA384 (256/256 bits)
            >May 28 20:09:45 cloudserver postfix/smtpd[21079]: [ID
            197553 mail.info] NOQUEUE: reject: MAIL from
            sender-host[*.*.*.*]: 452 4.3.1 Insufficient system
            storage; proto=ESMTP helo=
            >May 28 20:09:45 cloudserver postfix/smtpd[21079]: [ID
            947731 mail.warning] warning: not enough free space in
            mail queue: 38384640 bytes
            >
            >This last warning looks quite uncomprehensible, message
            size limit is
            >50000000, and sureĀ 38384640 is less than 1.5*msl, so
            what's the problem?

            _that_ is apparently the problem.

            you have 38384640 B (~38MB) of free space in queue, but
            message maximum size
            is 50MB, so you don't have enough of free space for
            maximum message size,
            not even for 1.5*maximum required by default:

            http://www.postfix.org/postconf.5.html#queue_minfree


-- Matus UHLAR - fantomas, uh...@fantomas.sk ;
            http://www.fantomas.sk/
            Warning: I wish NOT to receive e-mail advertising to this
            address.
            Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek
            reklamnu postu.
            The 3 biggets disasters: Hiroshima 45, Tschernobyl 86,
            Windows 95


    Gabriele

    What does the output of "zpool list" look like?

    Regards

-- ---
    Jaco Lesch
    SAIX HLS
    Email:ja...@saix.net

Gabriele

Have you possibly considered running the Postfix mail queues on a separate ZFS filestsystem? That is what we have done in our environment for Postfix on Solaris 11, also assigned a ZFS quota to the filesystem.

This is fairly straight forward with the "zfs create" command.

Just a thought.

Regards

--
---
Jaco Lesch
SAIX HLS
Email: ja...@saix.net

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