rDNS error

[sbrain]

Colleagues, I am getting the following error:

Occurs when sending emails via proxmox

RDNS_NONE               1.274 Delivered to internal network by a host with no rDNS

Received: from mail.domain.ru (mail.domain.ru [10.76.1.33])
    by mailgw.domain.ru (Proxmox) with ESMTPS id 69E3E20165E
    for <svetikus3@yandex.ru>; Tue, 31 Oct 2023 16:22:30 +0300 (MSK)
Received: from localhost (localhost [127.0.0.1])
    by mail.domain.ru (Postfix) with ESMTP id 5849B60C77E3
    for <svetikus3@yandex.ru>; Tue, 31 Oct 2023 16:22:30 +0300 (MSK)
Received: from mail.domain.ru ([127.0.0.1])
    by localhost (mail.domain.ru [127.0.0.1]) (amavisd-new, port 10032)
    with ESMTP id HjfZBvjVE7sh for <svetikus3@yandex.ru>;
    Tue, 31 Oct 2023 16:22:29 +0300 (MSK)
Received: from localhost (localhost [127.0.0.1])
    by mail.domain.ru (Postfix) with ESMTP id 394CB60920E3
    for <svetikus3@yandex.ru>; Tue, 31 Oct 2023 16:22:29 +0300 (MSK)
DKIM-Filter: OpenDKIM Filter v2.10.3 mail.domain.ru 394CB60920E3
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=domain.ru;
    s=E792C378-FFE9-11EA-B40B-E7A74F190D24; t=1698758549;
    bh=0JvKMTcwxojANX2gCukznW2HmFEEDo0jW6b+L21zqDI=;
    h=Date:From:To:Message-ID:MIME-Version;
    b=IZT7OnboQgwi13sB4hDgJazEhtADCjPFuDSg9p7PvAlCJaz6wxyMxCbUqdz0uHNCy
     4bWyhDcX68Tazn1PxAZG3PZfx69mvDEmXKNXl006K74jCrg647a1Zdv8/9D77kJIDm
     5/pjCodE5bSzKoeuNnXbdn9WkSa2UziJ39qFFxhqq0GyyA8GDMj5gwuTGEa8sKNuqv
     xsBCs451Hxqexjmm6hqxo3LitkUij+mJdNj8GlgJNBq1yTodqMVntuEvUNJUDNhZ/L
     2hpwTjzk7pPTx0rtfnU3YNneTYKJXrTqsoqdZpxb1fygPydJ1se+fOq3ON7ErAIY6B
     Kcp3N0/4eVD6Q==
X-Virus-Scanned: amavisd-new at domain.ru
Received: from mail.domain.ru ([127.0.0.1])
    by localhost (mail.domain.ru [127.0.0.1]) (amavisd-new, port 10026)
    with ESMTP id Uz0X0D9ifiPF for <svetikus3@yandex.ru>;
    Tue, 31 Oct 2023 16:22:28 +0300 (MSK)
Received: from mail.domain.ru (localhost [127.0.0.1])
    by mail.domain.ru (Postfix) with ESMTP id D60AB60C77E3
    for <svetikus3@yandex.ru>; Tue, 31 Oct 2023 16:22:28 +0300 (MSK)
Date: Tue, 31 Oct 2023 16:22:28 +0300 (MSK)

Of course, I configured rdns on all hosts participating in the forwarding process

I assume that this rule is triggered at this stage

Received: from mail.domain.ru ([127.0.0.1])

    by localhost (mail.domain.ru [127.0.0.1]) (amavisd-new, port 10032)

    with ESMTP id HjfZBvjVE7sh for <svetikus3@yandex.ru>;

    Tue, 31 Oct 2023 16:22:29 +0300 (MSK)

How can I fix this situation?