ubuntu server 20. exim4

на mail.ru доходят. на appmaildev.com/en/dkim тоже не доходят

/etc/exim4/exim4.conf.template

malware        = */defer_ok

=========================================
ошибка отправки в почт клиенте когда я отправляю

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  zacwez@ya.ru
    host mx.yandex.ru [77.88.21.249]
    retry timeout exceeded

Reporting-MTA: dns; 323c.ru

Action: failed
Final-Recipient: rfc822;zacwez@ya.ru
Status: 5.0.0
Remote-MTA: dns; mx.yandex.ru

=========================================
https://mxtoolbox.com

    SMTP Reverse DNS Mismatch     OK - 165.255.165.165 resolves to mail.323c.ru
    SMTP Valid Hostname     OK - Reverse DNS is a valid Hostname
    SMTP Banner Check     OK - Reverse DNS matches SMTP Banner
    SMTP TLS     OK - Supports TLS.
    SMTP Connection Time     0.581 seconds - Good on Connection time
    SMTP Open Relay     OK - Not an open relay.
    SMTP Transaction Time     2.001 seconds - Good on Transaction Time
Session Transcript:
Connecting to 165.255.165.165

220 mail.323c.ru [377 ms]
EHLO keeper-us-east-1b.mxtoolbox.com
250-mail.323c.ru Hello keeper-us-east-1b.mxtoolbox.com [52.55.244.91]
250-SIZE 52428800
250-8BITMIME
250-PIPELINING
250-AUTH PLAIN LOGIN
250-CHUNKING
250-STARTTLS
250-SMTPUTF8
250 HELP [270 ms]
MAIL FROM:<supertool@mxtoolboxsmtpdiag.com>
250 OK [271 ms]
RCPT TO:<test@mxtoolboxsmtpdiag.com>
550 relay not permitted [720 ms]

LookupServer 3316ms
=========================================

tail -f  /var/log/exim4/mainlog

ОШИБКА ОТПРАВКИ НА ЯНДЕКС
2021-08-23 04:05:39 1mI1DN-000LgO-NK <= adm@323c.ru H=smbxturbo.lan ([192.168.0.32]) [192.168.0.1] P=esmtpsa X=TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI="mail.323c.ru" A=dovecot_plain:adm@323c.ru S=2725 id=f8759668-fed3-371d-5e14-845b4da030bc@323c.ru
2021-08-23 04:05:39 1mI1DN-000LgO-NK ** zacwez@ya.ru R=dnslookup T=remote_smtp: all hosts for 'ya.ru' have been failing for a long time (and retry time not reached)
2021-08-23 04:05:39 1mI1DP-000LgU-Az <= <> R=1mI1DN-000LgO-NK U=Debian-exim P=local S=4048
2021-08-23 04:05:39 1mI1DN-000LgO-NK Completed
2021-08-23 04:05:39 1mI1DP-000LgU-Az => adm <adm@323c.ru> R=localuser T=local_delivery
2021-08-23 04:05:39 1mI1DP-000LgU-Az Completed

ОШИБКА ОТПРАВКИ НА ГУГЛ
2021-08-23 04:03:38 1mI1BR-000LbL-QY <= adm@323c.ru H=smbxturbo.lan ([192.168.0.32]) [192.168.0.1] P=esmtpsa X=TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI="mail.323c.ru" A=dovecot_plain:adm@323c.ru S=912 id=84d1e3b9-3d2f-cfdc-ff2f-9163825430bd@323c.ru
2021-08-23 04:03:38 1mI1BR-000LbL-QY == smolenskstar@gmail.com R=dnslookup T=remote_smtp defer (-53): retry time not reached for any host for 'gmail.com'

УСПЕХ ОТПРАВКИ НА MAIL.ru
2021-08-23 04:07:07 1mI1Eo-000LhL-T7 <= adm@323c.ru H=smbxturbo.lan ([192.168.0.32]) [192.168.0.1] P=esmtpsa X=TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_128_GCM:128 CV=no SNI="mail.323c.ru" A=dovecot_plain:adm@323c.ru S=675 id=c8f67c8a-c513-0970-2ffe-6a8be30d23b0@323c.ru
2021-08-23 04:07:08 1mI1Eo-000LhL-T7 => zacwez@mail.ru R=dnslookup T=remote_smtp H=mxs.mail.ru [94.100.180.31] X=TLS1.2:ECDHE_SECP256R1__RSA_SHA256__AES_256_GCM:256 CV=yes C="250 OK id=1mI1Ep-0000Rn-Mq"
2021-08-23 04:07:08 1mI1Eo-000LhL-T7 Completed