Csdrhrt

For weeks now I am trying to configure the virtualmin postfix mail server in a vps ubuntu 18 server, to send corporate email messages of the contact@pixi.com.ar style but I can not receive the messages from gmail, nor connect thunderbird to the server, I attach the postfix main.cf which is where I think the error is, when I send emails from usermin they get to gmail but to the spam folder

# See /usr/share/postfix/main.cf.dist for a commented, more complete version



# Debian specific:  Specifying a file name will cause the first

# line of that file to be used as the name.  The Debian default

# is /etc/mailname.

#myorigin = /etc/mailname



smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)

biff = no



# appending .domain is the MUA's job.

append_dot_mydomain = no



readme_directory = no



compatibility_level = 2



# TLS parameters

smtpd_tls_cert_file = /etc/postfix/postfix.cert.pem

smtpd_tls_key_file = /etc/postfix/postfix.key.pem

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_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination

myhostname = vps41250600.local 

alias_maps = hash:/etc/aliases

alias_database = hash:/etc/aliases

myorigin = /etc/mailname

mydestination = vps41250600.local, $myhostname, localhost.localdomain, vps.server.local, localhost.server.local, localhost

relayhost = 

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128

mailbox_command = /usr/bin/procmail-wrapper -o -a $DOMAIN -d $LOGNAME

mailbox_size_limit = 0

recipient_delimiter = +

inet_interfaces = all

inet_protocols = all

virtual_alias_maps = hash:/etc/postfix/virtual

sender_bcc_maps = hash:/etc/postfix/bcc

home_mailbox = Maildir/

smtpd_sasl_auth_enable = yes

smtpd_sasl_security_options = noanonymous

broken_sasl_auth_clients = yes

smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination

smtp_tls_security_level = dane

allow_percent_hack = no

smtpd_tls_security_level = may

Compadre hace unos días me vi con este mismo problema. Si tienes un VPS hay formas más sencillas de montar tu propio MTA como Iredmail (te toma 10 minutos) mira aquí

Para detectar problemas en la configuración a parte de revisar los logs en /var/log/mail.log puedes utilizar esta herramienta. Es posible que tengas el correo configurado como un openrelay lo cual hace que google no confíe en ti pero mucho peor puede que te empiecen a indexar en listas negras.

Espero esto te ayude.

In english so everyone can understand me.

Compadre a few days ago I saw myself with this same problem. If you have a VPS there are simpler ways to mount your own MTA like Iredmail (it takes 10 minutes) see here

To detect problems in the configuration apart from checking the logs in /var/log/mail.log you can use this tool. It is possible that you have mail configured as an openrelay which makes google do not trust you but much worse may start to index you in blacklists.

I hope this helps you.

Do you have a firewall preventing connections to your mail server. Port 25 must be available from other's, to test you are a real mail server and to deliver mails to you.