Failure sending notification

[xavi@…]

I'm getting the following error when adding a new ticket or changing an existing one. I'm running 0.9.4 an my trac.ini [notification] section looks like:

[notification]
always_notify_owner = true
smtp_always_cc = xbeumala@communi.tv
smtp_password = ctvdev05
smtp_enabled = true
smtp_replyto = xbeumala@comuni.tv
smtp_port = 25
always_notify_reporter = true
always_notify_owner = true
smtp_server = mail.communi.tv
smtp_from = dev@communi.tv
smtp_user = dev@communi.tv

Here's the error.

21:59:03 Trac[web_ui] ERROR: Failure sending notification on change to ticket #6: (-2, 'Name or service not known')
Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/trac/ticket/web_ui.py", line 352, in _do_save
    tn.notify(ticket, newticket=False, modtime=now)
  File "/usr/lib/python2.3/site-packages/trac/Notify.py", line 211, in notify
    NotifyEmail.notify(self, ticket.id, subject)
  File "/usr/lib/python2.3/site-packages/trac/Notify.py", line 108, in notify
    Notify.notify(self, resid)
  File "/usr/lib/python2.3/site-packages/trac/Notify.py", line 45, in notify
    self.begin_send()
  File "/usr/lib/python2.3/site-packages/trac/Notify.py", line 116, in begin_send
    self.server = smtplib.SMTP(self.smtp_server, self.smtp_port)
  File "/usr/lib/python2.3/smtplib.py", line 254, in __init__
    addr = socket.gethostbyname(socket.gethostname())
gaierror: (-2, 'Name or service not known')

I've been looking into another similar tickets, but doesn't seems to work for me.

Thanks a lot for your great work!

X.

[Emmanuel Blot]

Which OS are you using ?

Can you try to run a SMTP test from a simple Python script, such as:

import smtplib
s = smtplib.SMTP('mail.communi.tv', 25)
s.login('dev@communi.tv', 'ctvdev05')
s.sendmail('dev@communi.tv', ['dev@communi.tv'], "TEST")
s.close()

Do not forgot to run your test with the same user as your web server. Some Linux systems do not accept SMTP outgoing connection from the web 'user', for example…

Anyway, there's something wrong with this setup:

telnet mail.communi.tv 25
Trying 217.116.16.4...
Connected to mail.communi.tv.
Escape character is '^]'.
220 bandalatina.com ESMTP
EHLO free.fr
250-bandalatina.com
250-PIPELINING
250-8BITMIME
250 SIZE 15000000

Your email server does not report support for authentication (AUTH), whereas you are explicitly authenticating on the server (smtp_user, smtp_password). It should report something as:

250-AUTH PLAIN

for example.