Postfix+Dovecot emails are not coming. how to solve?

Question

Mail server

Ubuntu 18.04, ip address is 80.14.123.196
Postfix, Dovecot, PostgreSQL, OpenDKIM Server behind
MikroTik gateway, all necessary ports are open (25, , 143, 465, 587, 993)
to spam.
However, I can't get it.

main.cf

#myhostname = mail.site.ru
compatibility_level=2
relay_domains =
virtual_alias_maps = proxy:pgsql:/etc/postfix/virtual_alias_maps.cf
virtual_mailbox_domains = proxy:pgsql:/etc/postfix/virtual_mailbox_domains.cf
virtual_mailbox_maps = proxy:pgsql:/etc/postfix/virtual_mailbox_maps.cf
virtual_mailbox_base = /home/vmail
virtual_mailbox_limit = 512000000
virtual_minimum_uid = 5000
virtual_transport = virtual
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000

local_transport = virtual
local_recipient_maps = $virtual_mailbox_maps
transport_maps = hash:/etc/postfix/transport

smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options

smtpd_tls_security_level = may
smtp_tls_security_level = may

smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/ssl/private/server.crt
smtpd_tls_key_file = /etc/ssl/private/server.key
smtpd_sasl_local_domain = $mydomain

 
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_tls_protocols = !SSLv2, !SSLv3

broken_sasl_auth_clients = yes
smtpd_tls_loglevel = 1

html_directory = /usr/share/doc/postfix/html
queue_directory = /var/spool/postfix

mydestination = localhost

#OPENDKIM
milter_default_action = accept
milter_protocol = 2
smtpd_milters = inet:127.0.0.1:8891
non_smtpd_milters = inet:127.0.0.1:8891

There are such entries in the
mail.log logs

spoiler

Aug  1 05:55:43  myserver postfix/smtp[29466]: 1841B842A6B: host mail.shara.tv[285.130.195.145] 
said: 450 4.7.1 Client host rejected: cannot find your hostname, [80.14.123.196]. 

For assistance, call [phone] #8080. 
Please provide the following information in your problem report: time (Aug 01 05:55:43), client (80.14.123.196) and server (mail.crocusgroup.ru). (in reply to RCPT TO command)

Answer 1

judging by the log, there is no reverse PTR record. it must be configured on your DNS server, or on the server of the hoster / provider, so that <domain_name_of_your_server> isdig -tPTR -x<IP_вашего_сервера> returned to the terminal command .