Ubuntu postfix sendgrid erro de transporte de correio desconhecido

Question

Configurei um postfix semelhante a este: "Destinatário endereço rejeitado "ao enviar um email com sendgrid

$ /etc/postfix/main.cf

smtp_sasl_auth_enable = yes 
smtp_sasl_password_maps = static:username:password
smtp_sasl_security_options = noanonymous 
smtp_tls_security_level = may 
header_size_limit = 4096000
relayhost = [smtp.sendgrid.net:587]

Mas continuo recebendo esses erros:

Feb 3 22:57:29 vsempprdapp11 postfix/error[24019]: 327A4441481: to=<[email protected]>, relay=none, delay=193633, delays=193632/1/0/0.01, dsn=4.3.0, status=deferred (unknown mail transport error) 

netstat mostra que eu tenho a porta 25 ouvindo

/var/www/app: netstat -an | grep :25
tcp        0      0 0.0.0.0:25              0.0.0.0:*
LISTEN     
tcp6       0      0 :::25                   :::*
LISTEN     
udp6       0      0 fe80::250:56ff:fe96:123 :::* 

meu postconf

Outra coisa interessante é que, se eu alterar meu main.cf para o seguinte, ele funciona para IDs de e-mails que não são de domínio (endereços de e-mail que não @ bratgroup.com como @ gmail.com, e-mails @ hotmail.com são entregues). E para @ bratgroup.com mail.log diz connection timed out

# 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 = mybrat.bratgroup.com
mydomain = mybrat.bratgroup.com
myhostname = mybrat.bratgroup.com
mydestination = localhost.$mydomain, localhost
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
message_size_limit = 27852800
append_dot_mydomain = no
biff = no
readme_directory = no
#delay_warning_time = 4h

# TLS parameters
smtpd_use_tls=yes
smtpd_tls_cert_file=/etc/apache2/ssl/mybrat.bratgroup.com/site.crt
smtpd_tls_key_file=/etc/apache2/ssl/mybrat.bratgroup.com/site.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# opportunistic encryption, as a client
smtp_tls_security_level = may
bounce_template_file = /etc/postfix/bounce.cf

alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
relayhost = 
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = ipv4

virtual_mailbox_domains = mybrat.bratgroup.com

virtual_mailbox_maps =

    

Answer 1

Minhas configurações SMTP acima tiveram um erro de sintaxe:

relayhost = [smtp.sendgrid.net:587]

Deveria ter sido

relayhost = [smtp.sendgrid.net]:587

Ref: link