I have my Postfix server. I can send email via it with no problem using Thunderbird. For smtp I have:
port - 587
Normal Password
STARTTLS
However, I can't send an email through the same server via my own app. The settings are these:
server: "mail.my_server.com",
username: "aaa@my_domain123.com",
password: "fdsafdsafdsfds"",
port: 587,
allowed_tls_versions: [:"tlsv1", :"tlsv1.1", :"tlsv1.2"],
retries: 5,
auth: :if_available
// tls: :always,
// ssl: true,
// no_mx_lookups: false, # can be `true`
// auth: :always,
I have an exception:
450 4.7.1 Client host rejected: cannot find your reverse hostname: 11.22.33.44
Where 11.22.33.44 is my external IP of my home computer
How can I be able to send email from home computer via Thunderbird, but not my own app running on the same home computer, using the same server and presumably - settings?