Search results for "Cannot connect to SMTP server"

[MM3-users] Re: Mailman3 not delivering list mail

by gordon＠dickens.com

Hi Mark, I have errors like these in the mailman3 logs but they occurred earlier (that is prior to my attempting to post messages to the new mailman3 mailing list and which are not echoed to list members): Oct 01 11:08:22 2020 (7895) Skipping and preserving unparseable message: 1601564901.8696995+c2b86623e2dcc8e9800b10ca2bcf8b82e8d8d662 Oct 01 11:08:23 2020 (7895) Uncaught runner exception: [Errno 13] Permission denied: '/var/lib/mailman3/queue/virgin/1601564902.28165 63+16bd684dfb18c6175f3e7b0b11312cb203dc9c89.pck' Oct 01 11:08:23 2020 (7895) Traceback (most recent call last): File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 158, in _one_iteration msg, msgdata = self.switchboard.dequeue(filebase) File "/usr/lib/python3/dist-packages/mailman/core/switchboard.py", line 150, in dequeue with open(filename, 'rb') as fp: PermissionError: [Errno 13] Permission denied: '/var/lib/mailman3/queue/virgin/1601564902.2816563+16bd684dfb18c6175f3e7b0b11312cb203dc9c89.pck' The above errors occurred prior to the time that I attempted to send to the mailman3 list. However, here is what I see in the logs immediately after I sent a message to the list and which was not then echoed to list members: Oct 01 11:51:03 2020 (7888) ACCEPT: <f92eeaad-245c-124b-dd09-b31a6b3c5686(a)dickens.com> Oct 01 11:51:07 2020 (7885) HyperKitty archived message <f92eeaad-245c-124b-dd09-b31a6b3c5686(a)dickens.com> to https://georgiajets.org /mailman3/hyperkitty/list/members(a)georgiajets.org/message/NUOU6UQ6DSHSK2WKNVZFIN5AELK5EYBU/ Oct 01 11:51:07 2020 (7891) Cannot connect to SMTP server localhost on port 25 Please note the message about the SMTP server not being able to connect to local host on port 25. Please let me know what you think is wrong and how to fix it. Thanks, Gordon

3 years, 7 months

[MM3-users] Re: Uncaught runner exception

by Wolfgang Bock

Hello Mark, thanks for your hint. Postfix is runnig as mta on my machine. I tested port 25 with swaks ->mail to user on server: localhost port 25 -> everything fine Mailman is configured with localhost for incoming and outgoing mails. After stopping mailman3, deleting all files in the queue directories, restart mailman3 I sent a test-mail /var/log/mailman3/mailman.log Apr 07 12:08:23 2020 (28198) Master started Apr 07 12:08:24 2020 (28206) out runner started. Apr 07 12:08:24 2020 (28202) command runner started. Apr 07 12:08:24 2020 (28203) in runner started. Apr 07 12:08:24 2020 (28200) archive runner started. Apr 07 12:08:24 2020 (28201) bounces runner started. Apr 07 12:08:24 2020 (28210) retry runner started. Apr 07 12:08:25 2020 (28208) rest runner started. Apr 07 12:08:25 2020 (28212) digest runner started. Apr 07 12:08:25 2020 (28205) nntp runner started. Apr 07 12:08:26 2020 (28211) virgin runner started. Apr 07 12:08:26 2020 (28207) pipeline runner started. Apr 07 12:08:26 2020 (28204) lmtp runner started. Apr 07 12:09:19 2020 (28203) ACCEPT: <000f01d60cc4$96c9a8d0$c45cfa70$@[domain]> Apr 07 12:09:21 2020 (28206) Cannot connect to SMTP server localhost on port 25 I have no idea what to do for solving my problems. Regards from Hamburg Wolfgang -----Ursprüngliche Nachricht----- Von: Mark Sapiro <mark(a)msapiro.net> Gesendet: Montag, 6. April 2020 23:50 An: Wolfgang Bock <mailinglisten(a)wbock.de> Betreff: Re: [MM3-users] Re: Uncaught runner exception On 4/6/20 2:44 PM, Wolfgang Bock via Mailman-users wrote: > Thank you Steven for your reply! > > I Set smtp_server to port 25 and got a "Cannot connect ro SMTP Server > on port 25", the former error message didn't show again. > > As I see port 25 is reseved for postfix. So I have to fiddle out how > mailman3 could also use this port for sending mails out. .... You need an MTA for Mailman to deliver its mail to. Normally this will be Postfix, sendmail, Exim, etc running on localhost and listening on port 25. Do you have such an MTA running on localhost? Note, Mailman does not directly send mail to end recipients. It only delivers mail to an outgoing MTA. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

4 years, 1 month

[MM3-users] Re: mail stuck in "out" queue

by Mark Sapiro

On 6/13/20 6:30 PM, Kareem Zidane wrote: > Hi Mark, > > Sorry to bother you! Just wanted to loop back on the above to see if you might have any thoughts on that by chance? I'm sorry, I thought I had replied, but clearly I hadn't. So as I understand it, you have multiple lists in this Mailman 3 installation, and only one list has this issue, and mail to this list gets archived, but not delivered but is queued in var/queue/out and remains there. This is hard to understand. When Mailman's out runner processes its queue, it processes messages in chronological order without regard to which list they are from, so it must be at least attempting to deliver these messages, and somehow failing and requeueing them. I do see this Jun 09 17:36:31 2020 (82) Cannot connect to SMTP server postfix on port 25 in the log excerpt you posted. What's in Mailman's smtp.log and the postfix mail.log that might be related to this? It's hard to understand how an MTA connect issue could affect only one list. If it is accepting the connict and then dropping the connection for too many invalid RCPT addresses, that's a possibility. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

3 years, 11 months

[MM3-users] Re: including a template failed

by Mark Sapiro

On 9/23/20 3:03 PM, Wolfgang Bock via Mailman-users wrote: > > Dear Mark, > > Q: Can you get > https://webmail.domain-02.de/mailman3/postorius/api/templates/list/mylist.li > sts.domain-03.de/list:member:regular:footer on the Mailman machine? > > A: No > > Q: What is your setting for POSTORIUS_TEMPLATE_BASE_URL? > > A: > was: POSTORIUS_TEMPLATE_BASE_URL = 'http://localhost/mailman3/' > > Changed it to: POSTORIUS_TEMPLATE_BASE_URL = 'https://localhost/mailman3/' Can you get https://localhost/mailman3/postorius/api/templates/list/mylist.lists.domain… on the Mailman machine? > Now another problem occurs: > > Sep 23 22:51:34 2020 (13492) Cannot connect to SMTP server localhost on port > 25 > HTTPSConnectionPool ... 'localhost' doesn't match either of > 'blog.domain-04.de', 'lists.domain-04.de', 'mail.domain-04.de', > 'domain-04.de', 'www.domain-04.de'"))) The 'HTTPSConnectionPool' message has nothing to do with the 'Cannot connect' issue. > Port 25 entry results from the manual regarding the postfix configuration: > > https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/docs/mta.ht > ml > > e.g.: > [mta] > incoming: mailman.mta.postfix.LMTP > outgoing: mailman.mta.deliver.deliver > lmtp_host: mail.example.com > lmtp_port: 8024 > smtp_host: mail.example.com > smtp_port: 25 And I wonder why it's trying to connect to localhost when smtp_host is mail.example.com. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

3 years, 7 months

[MM3-users] Re: signup / registration error - permissions and cert chains

by Victoriano Giralt

El viernes, 31 de diciembre de 2021 1:48:38 (CET) David Newman escribió: > I'd like for regular (non-admin) list subscribers to be able to manage > their subscription preferences and view list archives. That's a good way to go :-) My response is more of a (very) old sysadmin and Django user (since 2008) hunch that a proper one based on code and documentation review, but I've been trying to contribute several times and always (super) Mark Sapiro beats me :-) > If I'm reading the error correctly, this is related to an inability to > verify the cert chain. The /etc/mailman3/settings.py file points to the > same cert and key files used by Nginx, Postfix, and Dovecot. You are right in your diagnose but not in your interpretation (see my comment below inside the traceback). It is certificate related, but not for server TLS, but for CLIENT authentication. > EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend' > EMAIL_HOST = 'localhost' > EMAIL_PORT = 25 > EMAIL_HOST_USER = 'dnewman(a)networktest.com' > EMAIL_HOST_PASSWORD = 'wouldnt-you-like-to-know' > EMAIL_USE_TLS = 'True' > EMAIL_SSL_CERTFILE = '/etc/ssl/certs/myhost.crt' > EMAIL_SSL_KEYFILE = '/etc/ssl/private/myhost.key' All these settings above are used for SENDING messages and, if I'm not mistaken, the SSL key and cert are used for authenticating the user sending the email. Actually, using TLS and SMTP Auth for localhost is a bit too much. I've been configuring SMTP servers since 1990 and my mail servers just accept mail form localhost, if they are broken into, the user and password have already been exposed :-) > But this might only be for email, not Postorius/Django. You are right (if I also am) > What additional configuration is needed to allow regular users to create > and manage their own accounts? I'd say that is more what is not needed (the SMTP TLS authentication) I'll remove the "noise". These are the tell tale lines: > "/opt/mailman/venv/lib/python3.9/site-packages/django/core/mail/backends/smt > p.py", line 67, in open > self.connection.starttls(keyfile=self.ssl_keyfile, > certfile=self.ssl_certfile) The SMTP Django backend is trying to connect to the mail server to send the Mailman account confirmation message and failing, probably because the user Django runs as cannot open the private key (which is a very sensible thing if that private key is the one used for the web facing TLS certificate, I can tell you how bad in private or search for my name, wasd, apache and VMS ;-)) That certificate is not needed for sending email from Django, and, as I said, not even SMTP Auth for sending via localhost. Actually, doing SMTP Auth on port 25 is not even recommended practice. Happy, healthy, safe and well ventilated New Year to all. -- Victoriano Giralt Innovation Director Digital Transformation Vicerectorate University of Malaga +34952131415 SPAIN ================================================================== Note: signature.asc is the electronic signature of present message A: Yes. > Q: Are you sure ? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting annoying in email ?

2 years, 4 months

[MM3-users] Re: "Cannot connect to SMTP server localhost on port 25"

by Manos Pitsidianakis

Στις 2019-09-21 22:18, Mark Sapiro έγραψε: > On 9/21/19 1:00 PM, Manos Pitsidianakis wrote: >> >> Can I use a debugger to see exactly what happens in the runner? > > > You might be able to run the runner under pdb > <https://docs.python.org/3.2/library/pdb.html>. I think I found what's wrong: /usr/local/lib/python3.5/dist-packages/mailman/core/runner.py(134)run() -> filecnt = self._one_iteration() /usr/local/lib/python3.5/dist-packages/mailman/core/runner.py(173)_one_iteration() -> self._process_one_file(msg, msgdata) /usr/local/lib/python3.5/dist-packages/mailman/core/runner.py(266)_process_one_file() -> keepqueued = self._dispose(mlist, msg, msgdata) /usr/local/lib/python3.5/dist-packages/mailman/runners/outgoing.py(95)_dispose() -> self._func(mlist, msg, msgdata) /usr/local/lib/python3.5/dist-packages/mailman/mta/deliver.py(86)deliver() -> refused = agent.deliver(mlist, msg, msgdata) > /usr/local/lib/python3.5/dist-packages/mailman/mta/base.py(163)deliver() -> callback(mlist, message_copy, msgdata_copy) /usr/local/lib/python3.5/dist-packages/mailman/mta/decorating.py(32)decorate() -> decorator.process(mlist, msg, msgdata) /usr/local/lib/python3.5/dist-packages/mailman/handlers/decorate.py(264)process() -> process(mlist, msg, msgdata) /usr/local/lib/python3.5/dist-packages/mailman/handlers/decorate.py(89)process() -> footer = decorate('list:member:regular:footer', mlist, d) /usr/local/lib/python3.5/dist-packages/mailman/handlers/decorate.py(226)decorate() -> template = getUtility(ITemplateLoader).get(name, mlist, **extradict) /usr/local/lib/python3.5/dist-packages/mailman/model/template.py(188)get() -> name, lookup_context, **substitutions) /usr/local/lib/python3.5/dist-packages/mailman/database/transaction.py(85)wrapper() -> return function(args[0], config.db.store, *args[1:], **kws) /usr/local/lib/python3.5/dist-packages/mailman/model/template.py(109)get() -> contents = protocols.get(actual_uri, **auth) /usr/local/lib/python3.5/dist-packages/mailman/utilities/protocols.py(38)get() -> response = requests.get(url, timeout=REQUEST_TIMEOUT, **kws) /usr/lib/python3/dist-packages/requests/api.py(70)get() -> return request('get', url, params=params, **kwargs) /usr/lib/python3/dist-packages/requests/api.py(56)request() -> return session.request(method=method, url=url, **kwargs) /usr/lib/python3/dist-packages/requests/sessions.py(488)request() -> resp = self.send(prep, **send_kwargs) /usr/lib/python3/dist-packages/requests/sessions.py(609)send() -> r = adapter.send(request, **kwargs) /usr/lib/python3/dist-packages/requests/adapters.py(487)send() -> raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /mailman3/api/templates/list/meli-announce.meli.delivery/list:member:regular:footer (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7f4f0495a358>: Failed to establish a new connection: [Errno 111] Connection refused',)) mailman3 tries to get the template I've set via the mailman suite interface but it assumes it is hosted locally: 'http://localhost:8000/mailman3/api/templates/list/meli-announce.meli.delive…' In my setup, they are separate machines. I can't find any way to change this in the configuration. Also, can't the same template be loaded from the master's localhost:8001 api? Haven't fiddled with python for some time, why is this exception catched by "except socket.error"? Is it a subclass of requests.exceptions.ConnectionError?

4 years, 7 months

[MM3-users] Re: Uncaught runner exception

by Wolfgang Bock

Yes, and I made all the tests as discribed here: https://workaround.org/ispmail/buster/relaying-through-postfix/ including the swaks test mentioned before output of sudo netstat -lntup | grep ":25" tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 20660/master tcp6 0 0 :::25 :::* LISTEN 20660/master output of sudo lsof -i :25 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME master 20660 root 13u IPv4 1474228 0t0 TCP *:smtp (LISTEN) master 20660 root 14u IPv6 1474229 0t0 TCP *:smtp (LISTEN) Regards Wolfgang -----Ursprüngliche Nachricht----- Von: Mark Sapiro <mark(a)msapiro.net> Gesendet: Dienstag, 7. April 2020 21:28 An: mailman-users(a)mailman3.org Betreff: [MM3-users] Re: Uncaught runner exception On 4/7/20 3:22 AM, Wolfgang Bock via Mailman-users wrote: > Apr 07 12:09:21 2020 (28206) Cannot connect to SMTP server localhost > on port 25 > > I have no idea what to do for solving my problems. Can you successfully telnet localhost 25 from a shell on the server? -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan _______________________________________________ Mailman-users mailing list -- mailman-users(a)mailman3.org To unsubscribe send an email to mailman-users-leave(a)mailman3.org https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/

4 years, 1 month

[MM3-users] Re: Uncaught runner exception

by Wolfgang Bock

Thank you Steven for your reply! I Set smtp_server to port 25 and got a "Cannot connect ro SMTP Server on port 25", the former error message didn't show again. As I see port 25 is reseved for postfix. So I have to fiddle out how mailman3 could also use this port for sending mails out. .... Regards Wolfgang -----Ursprüngliche Nachricht----- Von: Stephen J. Turnbull <turnbull.stephen.fw(a)u.tsukuba.ac.jp> Gesendet: Montag, 6. April 2020 14:56 An: Wolfgang Bock <mailinglisten(a)wbock.de> Cc: 'mailman-users' <mailman-users(a)mailman3.org> Betreff: [MM3-users] Uncaught runner exception Wolfgang Bock via Mailman-users writes: > smtp_host: Tried with 127.0.0.1/localhost/server ip or FQDN=servername > smtp_port: (got a "cannot connect to SMTP Server on port 25") so I let this > item empty ... This is your problem. By default, it should be port 25. Apparently there is no fallback for this in case it's left empty. (I would guess if you commented it out, it *would* fall back to port 25. > Apr 06 00:03:26 2020 (31153) ACCEPT: > <6a504834-123a-60f6-3a0e-494623b74523(a)mailbox.org> > Apr 06 00:03:26 2020 (31156) Uncaught runner exception: invalid literal for > int() with base 10: '' This is saying int() was called with the empty string as argument. > Apr 06 00:03:26 2020 (31156) Traceback (most recent call last): [intermediate frames omitted] > File "/usr/lib/python3/dist-packages/mailman/mta/base.py", line 45, in > __init__ > config.mta.smtp_host, int(config.mta.smtp_port), The call to int() in the line above is getting the empty value from the config file. Changing smtp_port to '25' (or the appropriate value) in the config file will prevent the "Uncaught runner exception". If localhost's smptd is not listening on port 25, as the comment above seems to indicate, you either need to - find out the correct value if smptd is listening on a different port, - enable that daemon if it's not running, or - point smtp_host at a functioning outgoing mail server if localhost is not expected to be a mail server. In the latter two cases you also need to make sure smtp_port is correct for the server you use. There are some other, rarer and more complicated, possibilities, so if your answer is "none of the above", feel free to say so. But check those first, please. Steve _______________________________________________ Mailman-users mailing list -- mailman-users(a)mailman3.org To unsubscribe send an email to mailman-users-leave(a)mailman3.org https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/

4 years, 1 month

[MM3-users] Re: Uncaught runner exception

by Mark Sapiro

On 4/7/20 3:22 AM, Wolfgang Bock via Mailman-users wrote: > Apr 07 12:09:21 2020 (28206) Cannot connect to SMTP server localhost on port 25 > > I have no idea what to do for solving my problems. Can you successfully telnet localhost 25 from a shell on the server? -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

4 years, 1 month

[MM3-users] Re: Bulk changes to delivery mode and moderation action

by Mark Sapiro

On 1/7/22 6:07 PM, David Newman wrote: > On 1/7/22 4:32 PM, Mark Sapiro wrote: > >> I suspect an issue trying to connect to the MTA to send the messages. >> This can be caused by permission errors. Check permissions on >> Mailman's var/templates/* > > Bingo. This list had regular and digest footer templates with 0644 > permissions owned by root:root, and there was an exception and traceback > for the most recent message in shunt about the permissions issue. That comes from running `mailman import21` as `root`. Always run `mailman` commands as the Mailman user. > I've changed ownership to mailman:mailman and restarted the mailman3 > service. > > As soon as I fixed this, my inbox filled with test messages... Good! >> Is there a 'Cannot connect to SMTP server ... on port ...' anywhere in >> mailman.log? > > Yes, lots. This might or might not be a different issue. It is exactly this issue which is now corrected. > As I mentioned earlier, the most recent message in shunt was from 0000 > hours today. There are many "Cannot connect" messages since then, but > none since fixing the issue above. The Cannot connect messages are from the issue of ownership of the templates and Mailman's out runner continually retrying the send. This is separate from the shunted messages. > Seems OK now. The superuser sees all posts after the unshunt action. So it appears that you ran `mailman unshunt` and the shunted messages were successfully processed, so whatever caused them to be shunted in the first place is fixed. Individual messages don't get shunted because of this template ownership issue, but it may be that digests do get shunted for this reason. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

2 years, 4 months

Search results for query "Cannot connect to SMTP server"