[FIXED] How to fix error when sending mail with django in docker container? (Cannot assign requested address)

Issue

I'm getting an error when sending a letter both in Celery, as in the shell itself. Without the docker itself, there is no such error on the local computer, but there is on the server.

Error:

    send_mail('test', 'test msg', '[email protected]', ['[email protected]'])
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.10/site-packages/django/core/mail/__init__.py", line 87, in send_mail
    return mail.send()
  File "/usr/local/lib/python3.10/site-packages/django/core/mail/message.py", line 298, in send
    return self.get_connection(fail_silently).send_messages([self])
  File "/usr/local/lib/python3.10/site-packages/django/core/mail/backends/smtp.py", line 124, in send_messages
    new_conn_created = self.open()
  File "/usr/local/lib/python3.10/site-packages/django/core/mail/backends/smtp.py", line 80, in open
    self.connection = self.connection_class(
  File "/usr/local/lib/python3.10/smtplib.py", line 255, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/local/lib/python3.10/smtplib.py", line 341, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/local/lib/python3.10/smtplib.py", line 312, in _get_socket
    return socket.create_connection((host, port), timeout,
  File "/usr/local/lib/python3.10/socket.py", line 845, in create_connection
    raise err
  File "/usr/local/lib/python3.10/socket.py", line 833, in create_connection
    sock.connect(sa)
OSError: [Errno 99] Cannot assign requested address

I looked through the other answers and didn't find anything helpful. I have a password configured, this error occurs in the docker.

Solution

OSError: [Errno 99] Cannot assign requested address this means the provide ip/port is already taken.Change your ip/port and try again

find docker-compose.yml

version: '3.8'
services:
  web:
    build: .
    restart: unless-stopped
    ports: ['192.107.1.2:8000:8000'] # <-- change IP and port here
  

Try this

Answered By - Kiran S