Search results for "Cannot connect to SMTP server"

[MM3-users] Re: Cannot connect to SMTP server

by mkummini＠cmi.ac.in

Thank you! ownership and permissions of the template files was the problem. Manoj.

3 years, 2 months

[MM3-users] Re: including a template failed

by Wolfgang Bock

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/' 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'"))) 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 Regards Wolfgang -----Ursprüngliche Nachricht----- Von: Mark Sapiro <mark(a)msapiro.net> Gesendet: Sonntag, 20. September 2020 01:05 An: mailman-users(a)mailman3.org Betreff: [MM3-users] Re: including a template failed On 9/19/20 2:47 PM, Wolfgang Bock via Mailman-users wrote: > Hi, > > I created a new mailinglist and got during the test-process the > following errormessage in my mailman.log after: > ... > Sep 19 22:55:08 2020 (1433) ACCEPT: > <000001d68ec7$2553e6e0$6ffbb4a0$(a)domain-01.de> > > Errors: > > Sep 19 22:55:09 2020 (1436) Cannot connect to SMTP server localhost on > port > 25 > HTTPSConnectionPool(host='webmail.domain-02.de', port=443): Max > retries exceeded with url: > /mailman3/postorius/api/templates/list/mylist.lists.domain-03.de/list: > member :regular:footer (Caused by NewConnectionError('<urllib3.connec > tion.VerifiedHTTPSConnection object at 0x7fc8380f1748>: Failed to > establish a new connection: [Errno -2] Name or service not known')) > ... This is wierd. It looks like we are trying to establish a connection to host='webmail.domain-02.de', port=443 in order to GET /mailman3/postorius/api/templates/list/mylist.lists.domain-03.de/list:member :regular:footer, but the error says "Cannot connect to SMTP server localhost on port 25". I have no idea how port 25 is coming into it. 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? What is your setting for POSTORIUS_TEMPLATE_BASE_URL? -- 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/

5 years, 1 month

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

by Mark Sapiro

On 9/18/19 11:29 AM, Manos Pitsidianakis wrote: > Hello, > > I've been getting "Cannot connect to SMTP server localhost on port 25" > from runner "out" in mailman.log over some mails stuck in shunt queue, > postfix logs show nothing when this happens, tcpdump on lo interface > port 25 shows nothing. The log shows up when I start mailman, and then > it seems not to show up again. That log message is only written once. It won't be written again unless the out runner is restarted or there is a successful delivery followed by another socket.error. > I can do 'telnet localhost 25' just fine, including as mailman user. I > can send and receive mail on my mail server. I tried making a test list > and sent/received messages fine. Is only one list affected, and is it all messages from this list or only some? > smtp debug logs show "Using agent: <mailman.mta.deliver.Deliver object > at 0x7fdd9793c940>" and "IndividualDelivery to: <email(a)address.tld>" on > repeat, where the email address is one of the addresses of the shunted > mails. Do some deliveries of the problem message succeed? I.e., in the normal case without failure, there will be one "IndividualDelivery to: <email(a)address.tld>" message for each recipient in the recipients list. In the shunted message case, the msgdata object in the shunted pickle contains the recipients. Are there "IndividualDelivery to: <email(a)address.tld>" entries for some but not all recipients. Is the last of these an invalid local address? (Postfix can return a 421 status and drop the connection if there are too many invalid local recipients, although I don't know if this would apply in the VERP case. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

6 years, 1 month

[MM3-users] Cannot connect to SMTP server

by mkummini＠cmi.ac.in

Hello. I am setting up a new mailman3 server (debian 11). `mailman3-full` is installed on the same server as postfix (our MTA). There is just one test mailing list now. When I send a message to it (I am a subscriber), mailman3 accepts the message through LMTP. Both the postfix log and mailman.log confirm this. Postfix log: Aug 14 03:21:25 mail postfix/lmtp[4097036]: 44E49272437D: to=<testlist(a)cmi.ac.in>, relay=127.0.0.1[127.0.0.1]:8024, delay=0.15, delays=0.02/0.03/0.01/0.09, dsn=2.0.0, status=sent (250 Ok) mailman.log: Aug 14 03:21:26 2022 (4096856) ACCEPT: <Yvgc3WsoFlpZbypw(a)cmi.ac.in> (The digest.mmdf file shows the test message I sent. Hence mailman3 has received the message from postfix.) However, after this, the postfix log does not show any attempt by mailman3 to send the message to the list members. The following runners have started (after the most recent mailman3 restart) Aug 14 03:19:53 2022 (4096853) archive runner started. Aug 14 03:19:53 2022 (4096863) retry runner started. Aug 14 03:19:53 2022 (4096862) rest runner started. Aug 14 03:19:54 2022 (4096855) command runner started. Aug 14 03:19:54 2022 (4096854) bounces runner started. Aug 14 03:19:55 2022 (4096860) pipeline runner started. Aug 14 03:19:55 2022 (4096866) digest runner started. Aug 14 03:19:55 2022 (4096858) nntp runner started. Aug 14 03:19:55 2022 (4096857) lmtp runner started. Aug 14 03:19:55 2022 (4096865) virgin runner started. Aug 14 03:19:56 2022 (4096856) in runner started. Aug 14 03:19:57 2022 (4096859) out runner started. However, I get the following line each time I do a restart Aug 14 03:19:57 2022 (4096859) Cannot connect to SMTP server localhost on port 587 I tried to specify the name of the postfix server, though it runs on the same machine as mailman3, and the different ports : 25, 465 and 587; they all raise the same error. Following <https://docs.mailman3.org/projects/mailman/en/latest/src/mailman/runners/do…>, I tried to create an outgoing test runner, but that resulted in the following errors. >>> from mailman.runners.outgoing import OutgoingRunner >>> from mailman.testing.helpers import make_testable_runner >>> outgoing = make_testable_runner(OutgoingRunner, 'out') Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3/dist-packages/mailman/testing/helpers.py", line 92, in make_testable_runner return EmptyingRunner(name) File "/usr/lib/python3/dist-packages/mailman/testing/helpers.py", line 79, in __init__ super().__init__(*args, **kws) File "/usr/lib/python3/dist-packages/mailman/runners/outgoing.py", line 53, in __init__ super().__init__(slice, numslices) File "/usr/lib/python3/dist-packages/mailman/core/runner.py", line 63, in __init__ section = getattr(config, 'runner.' + name) File "/usr/lib/python3/dist-packages/mailman/config/config.py", line 123, in __getattr__ return getattr(self._config, name) AttributeError: 'NoneType' object has no attribute 'runner.out' Here are the lines in mailman.cfg referring to smtp smtp_secure_mode : starttls smtp_host: localhost smtp_port: 587 If you could suggest how I could fix this issue, it would be great. Thank you. Manoj.

3 years, 2 months

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

by Mark Sapiro

On 9/19/19 2:22 AM, Manos Pitsidianakis wrote: > Thank you again for your reply, Mark. > > Στις 2019-09-18 21:53, Mark Sapiro έγραψε: >> What are these entries? > > > I have these log entries, are these what you were referring to? > > https://paste.debian.net/hidden/37d863f6/ No. You referred to "shunted" mails. I assumed that mail was winding up in the shunt queue, but this is apparently not the case. >> The "Cannot connect to SMTP server" log message should not occur >> immediately on startup unless there are queued messages. That log >> message should only occur on an attempt to actually send a message. > > I think the problematic e-mails that cause this issue are stuck on the > outgoing queue. Right now there are 2 pck files and one .bak in > var/queue/out changing filenames repeatedly. What is happening is you have three messages in the out queue which are problematic. When Mailman or the out runner is restarted, for some reason the attempt to send these triggers the "Cannot connect to SMTP server" issue which is logged only once. Here's what happens: The oldest .pck file in the out queue gets picked up by the out runner and renamed to a .bak. The runner attempts to send the message and gets a socket.error exception so it requeues the message to be tried again. This removes the .bak and creates a new .pck. This process continues so the files keep getting renamed. I suggest you stop Mailman, and move the three files out of the out/ queue, and then restart Mailman. This should stop the out runner from "spinning" on these messages. Then you can examine the files with Mailman's 'bin/mailman qfile' command and see if you can identify something in the recipients list or other metadata that might be causing this. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

6 years, 1 month

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

by Manos Pitsidianakis

Στις 2019-09-19 18:52, Mark Sapiro έγραψε: > No. You referred to "shunted" mails. I assumed that mail was winding up > in the shunt queue, but this is apparently not the case. But they are. Not exactly when or why but they show up in queue/shunt and queue/out at times. (maybe because I used mailman unshunt?) > > This should stop the out runner from "spinning" on these messages. Then > you can examine the files with Mailman's 'bin/mailman qfile' command > and > see if you can identify something in the recipients list or other > metadata that might be causing this. I cannot discern anything in the qfiles. It'd take some effort to deanonymise them for posting here. I've had new posts in the list and they get stuck as well.

6 years, 1 month

[MM3-users] Re: including a template failed

by Mark Sapiro

On 9/19/20 2:47 PM, Wolfgang Bock via Mailman-users wrote: > Hi, > > I created a new mailinglist and got during the test-process the following > errormessage in my mailman.log after: > ... > Sep 19 22:55:08 2020 (1433) ACCEPT: > <000001d68ec7$2553e6e0$6ffbb4a0$(a)domain-01.de> > > Errors: > > Sep 19 22:55:09 2020 (1436) Cannot connect to SMTP server localhost on port > 25 > HTTPSConnectionPool(host='webmail.domain-02.de', port=443): Max retries > exceeded with url: > /mailman3/postorius/api/templates/list/mylist.lists.domain-03.de/list:member > :regular:footer (Caused by NewConnectionError('<urllib3.connec > tion.VerifiedHTTPSConnection object at 0x7fc8380f1748>: Failed to establish > a new connection: [Errno -2] Name or service not known')) > ... This is wierd. It looks like we are trying to establish a connection to host='webmail.domain-02.de', port=443 in order to GET /mailman3/postorius/api/templates/list/mylist.lists.domain-03.de/list:member:regular:footer, but the error says "Cannot connect to SMTP server localhost on port 25". I have no idea how port 25 is coming into it. Can you get https://webmail.domain-02.de/mailman3/postorius/api/templates/list/mylist.l… on the Mailman machine? What is your setting for POSTORIUS_TEMPLATE_BASE_URL? -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

5 years, 1 month

[MM3-users] Re: Mailman3 moving to new server, not able to establish SMTP connection

by Andrew Hodgson

Guys, This has been fixed and was nothing to do with the SMTP server. I stepped through the code of the outgoing runner and found that an exception was being handled and giving an unhelpful error message. Once I got to the real exception I found it was due to this error: https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message… downgrading importlib_resources fixed the issue straight away. Thanks. Andrew. From: Andrew Hodgson Sent: 28 March 2020 16:41 To: mailman-users(a)mailman3.org Subject: Mailman3 moving to new server, not able to establish SMTP connection Hi, Whilst we are all stuck in doors I have started a project to move Mailman3 from a Docker installation to a new server using a Python venv. Old server was Debian Jessie and the new one is Buster. Using Exim with stock config. Everything seems to be going ok but mail isn't delivering (cannot connect to SMTP server). I have /opt/mailman which I did chown -R list:list mailman.cfg has following MTA settings: [mta] incoming: mailman.mta.exim4.LMTP configuration: python:mailman.config.exim4 I wrote a Systemd unit which starts Mailman from the venv and started up Mailman once I got Postgres sorted so it would create the necessary files in the var directory structure. One thing I noticed and had to fix is that it doesn't creat the directories for existing lists, and the Exim config examples out there check for the existance of those directories to identify whether the address exists. I created those anyway and set ownership perms as before. Once I fixed that I sent a test message to the owner address and that routed correctly and the headers indicated the message was sent back to localhost by Mailman. However I can't get it to route a list message, here is a log showing the start of the Mailman master processes and me sending a test message from Outlook (so incoming mail is routing ok): Mar 28 16:03:20 2020 (21877) Master started Mar 28 16:03:32 2020 (21889) lmtp runner started. Mar 28 16:03:32 2020 (21896) virgin runner started. Mar 28 16:03:32 2020 (21887) command runner started. Mar 28 16:03:32 2020 (21890) nntp runner started. Mar 28 16:03:32 2020 (21886) bounces runner started. Mar 28 16:03:33 2020 (21892) pipeline runner started. Mar 28 16:03:33 2020 (21888) in runner started. Mar 28 16:03:33 2020 (21895) retry runner started. Mar 28 16:03:34 2020 (21894) rest runner started. [2020-03-28 16:03:34 +0000] [21894] [INFO] Starting gunicorn 20.0.4 [2020-03-28 16:03:34 +0000] [21894] [INFO] Listening at: http://127.0.0.1:8001 (21894) [2020-03-28 16:03:34 +0000] [21894] [INFO] Using worker: sync [2020-03-28 16:03:34 +0000] [21963] [INFO] Booting worker with pid: 21963 Mar 28 16:03:34 2020 (21885) archive runner started. [2020-03-28 16:03:34 +0000] [21965] [INFO] Booting worker with pid: 21965 Mar 28 16:03:34 2020 (21897) digest runner started. Mar 28 16:03:36 2020 (21891) out runner started. Mar 28 16:04:25 2020 (21888) ACCEPT: <AM0PR08MB39085771D0E2D9114FDE8E83AFCD0(a)AM0PR08MB3908.eurprd08.prod.outlook.com<mailto:AM0PR08MB39085771D0E2D9114FDE8E83AFCD0@AM0PR08MB3908.eurprd08.prod.outlook.com>> Mar 28 16:04:26 2020 (21885) HyperKitty archived message <AM0PR08MB39085771D0E2D9114FDE8E83AFCD0(a)AM0PR08MB3908.eurprd08.prod.outlook.com<mailto:AM0PR08MB39085771D0E2D9114FDE8E83AFCD0@AM0PR08MB3908.eurprd08.prod.outlook.com>> to https://lists.hodgsonfamily.org/hyperkitty/list/blind-sysadmins@lists.hodgs… [28/Mar/2020:16:04:26 +0000] "GET /3.0/lists/blind-sysadmins(a)lists.hodgsonfamily.org<mailto:/3.0/lists/blind-sysadmins@lists.hodgsonfamily.org> HTTP/1.1" 200 445 "-" "GNU Mailman REST client v3.3.0" Mar 28 16:04:27 2020 (21891) Cannot connect to SMTP server localhost on port 25 [28/Mar/2020:16:04:27 +0000] "GET /3.0/lists/blind-sysadmins(a)lists.hodgsonfamily.org/config<mailto:/3.0/lists/blind-sysadmins@lists.hodgsonfamily.org/config> HTTP/1.1" 200 2595 "-" "GNU Mailman REST client v3.3.0" [28/Mar/2020:16:04:27 +0000] "GET /3.0/users/andrew(a)hodgson.io<mailto:/3.0/users/andrew@hodgson.io> HTTP/1.1" 200 439 "-" "GNU Mailman REST client v3.3.0" Now in the out queue I have this: root@elrond:/opt/mailman# ls -la /opt/mailman/var/queue/out total 32 drwxrwx--- 2 list list 4096 Mar 28 16:34 . drwxr-xr-x 14 list list 4096 Mar 28 13:25 .. -rw-rw---- 1 list list 11152 Mar 28 16:34 1585413255.2412584+390ab148e589108ed9e849445e5e90410f69def3.bak -rw-rw---- 1 list list 11152 Mar 28 16:34 1585413255.4891446+75bde47331619263b05f582c28ceb85a13bb5265.pck.tmp There is no connection attempt in the Exim log from Mailman and I can connect to localhost:25. This is a dualstack machine and I was wondering whether we had any IPV6 issues (I had an issue with Gunicorn and Nginx routing traffic due to this earlier that I had to sort), but as owner addresses are working I don't know what is different on that. Any suggestions? Thanks. Andrew.

5 years, 7 months

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

by Manos Pitsidianakis

Στις 2019-09-22 09:11, Manos Pitsidianakis έγραψε: > 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? > I created an ssh-tunnel that forwards postorious 8000 port to localhost as a systemd service to workaround this temporarily.

6 years, 1 month

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

by Mark Sapiro

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>. -- Mark Sapiro <mark(a)msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

6 years, 1 month

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