SOFT FAIL - I can't send emails

[kkeetto]

Hello, hope u are doing good. I'm new to this, I recently installed postal on a digitalocean vps, all went well, faced some difficulties but I was able to get it done. Now the problem is when i try to send to gmail or hotmail (and im assuming any mail box) it gives me this error after being queed for 5 mins :

on the postal logs i get this :

my postal status :

important note i guess: I didn't use the domain that contains postal as a sending domain ! I linked a second domain to postal for sending ( we will call the domain I use to access my smtp : ''domain A'' / and the domain that I linked to postal for sending : ''domain B") ( I thought it's possible bcs I figured that you can add multiple domains ) so maybe that's the problem

Now im going to show u my postal.yml file :

general:
This can be changed to allow messages to be sent from multiple IP addresses
use_ip_pools: false

web:
The host that the management interface will be available on
host: server.domain A
The protocol that requests to the management interface should happen on
protocol: https

web_server:
Specify configuration for the Postal web server
bind_address: 127.0.0.1
port: 5000

smtp_server:
Specify configuration to the Postal SMTP server
port: 25

logging:
Specify options for the logging
stdout: true

main_db:
Specify the connection details for your MySQL database
host: 127.0.0.1
username: root
password: postal
database: postal

message_db:
Specify the connection details for your MySQL server that will be house the
message databases for mail servers.
host: 127.0.0.1
username: root
password: postal
prefix: postal

rabbitmq:

• Specify connection details for your RabbitMQ server
  host: 127.0.0.1
  username: postal
  password: postal
  vhost: postal

dns:
Specify the DNS records that you have configured. Refer to the documentation at
https://github.com/atech/postal/wiki/Domains-&-DNS-Configuration for further
information about these.
mx_records:
- mx.postal.DomainB
smtp_server_hostname: postal.DomainB
spf_include: spf.postal.DomainB
return_path: rp.postal.DomainB
route_domain: routes.postal.DomainB
track_domain: track.postal.DomainB
-smtp :
Specify an SMTP server that can be used to send messages from the Postal management
system to users. You can configure this to use a Postal mail server once the
your installation has been set up.
host: 127.0.0.1
port: 2525
username: Complete when Postal is running and you can
password: generate the credentials within the interface.
from_name: Postal
from_address: server.DomainB

Ps: Please bear with me i don't know nothing about coding, im all ears thank you !

[willpower232]

It looks like you might need to ask DigitalOcean if they are blocking your email ports. If they aren't then you could try mxtoolbox.com to see if there are any other issues.

[kkeetto]

Thank you for answering
I have sent a ticket to DigitalOcean, by email ports u mean port 25 ? I have checked that port 25 is working fine :

another question is what should i check on mxtoolbox.com ? i mean which domain ? and check for what ?
Thank you again for your response !

[willpower232]

The port may be working on your server but its possible that Digital Ocean have blocked that port for your account so that you cannot connect to other port 25s around the internet.

Have a look at the "supertool", if you give it the IP or domain name of your Postal server then it can do all of the tests.