On 2/27/25 05:44, Kim Sunggun via Mailman-users wrote:
Hello,
/opt/mailman/venv/lib/python3.9/site-packages/django/conf/global_settings.py:EMAIL_BACKEND
= "django.core.mail.backends.smtp.EmailBackend"
/opt/mailman/venv/lib/python3.9/site-packages/mailman_web/settings/base.py:EMAIL_BACKEND
= 'django.core.mail.backends.smtp.EmailBackend'
OK.
I installed mailman3 in rhel 9 based on
https://docs.mailman3.org/en/latest/install/virtualenv.html#virtualenv-install
I set up Postfix as the MTA. I added the code as mentioned in the document.
unknown_local_recipient_reject_code = 550
owner_request_special = no
transport_maps =
hash:/opt/mailman/mm/var/data/postfix_lmtp
local_recipient_maps =
hash:/opt/mailman/mm/var/data/postfix_lmtp
relay_domains =
hash:/opt/mailman/mm/var/data/postfix_domains
These are good but not relevant to your issue. They affect delivery of
incoming mail to Mailman. Your issue is with outgoing mail from Django.
There are various settings that affect this SMTP connection as described
at https://docs.djangoproject.com/en/5.1/topics/email/#smtp-backend
The defaults are
EMAIL_HOST = "localhost"
EMAIL_PORT = 25
and for the optional settings
EMAIL_HOST_USER = ""
EMAIL_HOST_PASSWORD = ""
EMAIL_USE_TLS = False
EMAIL_USE_SSL = False
EMAIL_SSL_CERTFILE = None
EMAIL_SSL_KEYFILE = None
Have you set any of those to other than default in your Django settings?
If not, what do you get if you run this python snippet as the Mailman user
```
import smtplib
connection = smtplib.SMTP(host='localhost', port=25)
```
If you have, you can specify them as args to smtplib.SMTP, e.g.
```
connection = smtplib.SMTP(host='localhost', port=25, username='...',
password='...')
```
or if EMAIL_USE_SSL is True,
```
connection = smtplib.SMTP_SSL(host='localhost', port=25, username='...',
password='...', ssl_keyfile='...', ssl_certfile='...')
```
See
https://github.com/django/django/blob/ea1e3703bee28bfbe4f32ceb39ad31763353b143/django/core/mail/backends/smtp.py#L19
--
Mark Sapiro <m...@msapiro.net> The highway is for gamblers,
San Francisco Bay Area, California better use your sense - B. Dylan
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