- Mailman-users - lists.mailman3.org

Deliverability and Spam Filtering
by tom＠gather.coop Jan. 30, 2020

Jan. 30, 2020

Hi folks! First time poster, long time Mailman user. I am setting up a new Mailman 3 instance, and am super excited about the REST API. I plan to use it to enable tight integration with a separate web app that I maintain. As I am setting up the mail server, I am wondering about two related things: deliverability (for outgoing mail) and spam filtering (for incoming mail). What solutions have folks used for these? I know it is generally common now to outsource this critical task to a cloud provider like Mailgun or etc. Have folks needed this or is running ones own incoming and outgoing mail not a big deal? So many horror stories out there... As far as Mailgun goes, I think it should be straightforward to configure it for outgoing mail, but I'm not sure how I'd use it for incoming. Mailgun can forward mail via HTTP or to another email address. Neither I think would work out of the box. It would be great if there were a REST API endpoint for incoming mail, but I don't think such a thing exists, right? Perhaps I could add one? Another thought I had was that I could write a simple HTTP server that receives mail from Mailgun and forwards it to Mailman via LMTP. But it seems simpler to go right to Mailman's core API given that one exist already. Or am I thinking about this all wrong? Are there other more suitable services out there? I looked for cloud MTA providers but didn't turn up much except for in the large enterprise space, which I'm sure I can't afford. Thanks for any thoughts!

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SUBSCRIBE_FORM_SECRET in MM3?
by Gila Halpern Jan. 30, 2020

Jan. 30, 2020

I've been looking into ways to prevent spam on my company's list, and one thing I came across was the SUBSCRIBE_FORM_SECRET option in the Mailman configuration, which embeds a CSRF token into the form, and prevents it from being submitted until five seconds after it renders, to keep bots from subscribing. Unfortunately, the information I found pertained to Mailman 2. Does this option exist in MM3 as well, or is there a similar option?

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Mass subscribe gives HTTP Error 500 when using custom template
by Jeffrey D Jan. 30, 2020

Jan. 30, 2020

Hi, I have some issues with the Mass Subscribe option on Mailman 3.2.1. When using a custom "The notice sent to a member when they are subscribed to the mailing list." template, Postorius will throw an exception after pushing the "Subscribe Users" button on Mass Subscribe. In the web interface you will see a red notification bar with the text: "HTTP Error 500: b'A server error occurred. Please contact the administrator.'". And in the Mailman.log you will see the following error message: Traceback (most recent call last): File "/usr/lib/python3.7/wsgiref/handlers.py", line 137, in run self.result = application(self.environ, self.start_response) File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 50, in wrapper rtn = function(*args, **kws) File "/usr/lib/python3/dist-packages/mailman/rest/wsgiapp.py", line 216, in __call__ return super().__call__(environ, start_response) File "falcon/api.py", line 215, in falcon.api.API.__call__ File "falcon/api.py", line 189, in falcon.api.API.__call__ File "/usr/lib/python3/dist-packages/mailman/rest/members.py", line 266, in on_post pre_approved=pre_approved) File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 520, in register list(workflow) File "/usr/lib/python3/dist-packages/mailman/app/workflow.py", line 69, in __next__ return step() File "/usr/lib/python3/dist-packages/mailman/app/subscriptions.py", line 326, in _step_do_subscription self.member = self.mlist.subscribe(self.subscriber) File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/mailinglist.py", line 494, in subscribe notify(SubscriptionEvent(self, member)) File "/usr/lib/python3/dist-packages/zope/event/__init__.py", line 31, in notify subscriber(event) File "/usr/lib/python3/dist-packages/mailman/app/membership.py", line 169, in handle_SubscriptionEvent send_welcome_message(mlist, member, member.preferred_language) File "/usr/lib/python3/dist-packages/mailman/app/notifications.py", line 52, in send_welcome_message 'list:user:notice:welcome', mlist, language=language.code)) File "/usr/lib/python3/dist-packages/mailman/model/template.py", line 188, in get name, lookup_context, **substitutions) File "/usr/lib/python3/dist-packages/mailman/database/transaction.py", line 85, in wrapper return function(args[0], config.db.store, *args[1:], **kws) File "/usr/lib/python3/dist-packages/mailman/model/template.py", line 109, in get contents = protocols.get(actual_uri, **auth) File "/usr/lib/python3/dist-packages/mailman/utilities/protocols.py", line 38, in get response = requests.get(url, timeout=REQUEST_TIMEOUT, **kws) File "/usr/lib/python3/dist-packages/requests/api.py", line 75, in get return request('get', url, params=params, **kwargs) File "/usr/lib/python3/dist-packages/requests/api.py", line 60, in request return session.request(method=method, url=url, **kwargs) File "/usr/lib/python3/dist-packages/requests/sessions.py", line 533, in request resp = self.send(prep, **send_kwargs) File "/usr/lib/python3/dist-packages/requests/sessions.py", line 646, in send r = adapter.send(request, **kwargs) File "/usr/lib/python3/dist-packages/requests/adapters.py", line 516, in send raise ConnectionError(e, request=request) requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8000): Max retries exceeded with url: /postorius/api/templates/list/<MAILINGLIST>/list:user:notice:welcome (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f0b5ce8d8d0>: Failed to establish a new connection: [Errno 111] Connection refused')) Postorius/Mailman is running on port 8001, only Postorius still connecting on port 8000. Anyone seen something similar? Thanks in advance! Jeffrey

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DMARC Munging
by Allan Hansen Jan. 30, 2020

Jan. 30, 2020

All, The munged From: header in MM3 still says 'name' via ‘listname’ <‘listaddress’> This caused me and my subscribers a lot of grief in MM2: Some mail clients use the first part up to the From for future key-ahead for new email to ’name’, hiding the address, so what they think is a personal message for ’name’, instead goes to the entire list. Red faces all around. Stephen Thurnbull earlier suggested further munging by replacing the list address in the From: header like this: 'name' via ‘listname’ <‘whoopsieaddress’> Which will return an automated reply explaining the issue. I like this option. How can I get that in? Yours, Allan Hansen allan_hansen(a)icloud.com PS: I always use sender in Reply-To.

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Re: Mailman3 on Debian 10
by Abhilash Raj Jan. 29, 2020

Jan. 29, 2020

Please use mailman-users(a)mailman3.org for questions related to Mailman 3. On Wed, Jan 29, 2020, at 9:22 AM, Bala Mutyam wrote: > Hi there, > > I’m trying to install Mailman3 on Debian 10 as follows . > 1) Installed MariaDB, created databases, users for mailman3 and mailman3-web > 2) Then installed mailman3-full', 'dbconfig-mysql', 'python-pymysql', 'python3-pymysql', 'python3-mysqldb', 'nginx using Anisble script. > 3) I have removed Apache2 as it was installed with mailman3-full. > 4) Created a symbolic link for /etc/mailman3/nginx.conf and updated config files for mailman.cfg, mailman-hyperkitty.cfg, 25_mm3_macros, 455_mm3_router and 55_mm3_transport > > but the mailman service is not able to start it’s giving below error. Could you help me how to resolve it please? And also instructions for to install Mailman3 using Debian packages mailman3-full. I would like to use MySQl as backend and Exim4 as mail server. I couldn’t find new mailing list using the command line utility (/usr/sbin/newlist? > > Please see the attached Traceback. > > On webUI I’m seeing > Server error > An error occurred while processing your request. > > > *Attachments:* > * Mailman3 Errors.txt -- thanks, Abhilash Raj (maxking)

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Cron of Mailman notify is not working
by Shashikanth Komandoor Jan. 29, 2020

Jan. 29, 2020

Hello, With your help, I was able to setup mailman 3.3 on my RHEL 7.5 machine and running well and good. For daily notification I have added the below line in the crontab: 00 08 * * * /var/lib/mailman/venv3/bin/mailman notify But this cron job is not working while I was able to run the same command manually at my CLI. Please help if there is any issue with mailman 3.3 or cronjob. -- Thanks & Regards, Shashi Kanth.K 9052671936

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DMARC Mitigation Wrap
by Allan Hansen Jan. 27, 2020

Jan. 27, 2020

All, After a reinstall I’m back to thinking about the MM3 DMARC mitigation issue. Until munging can be improved, I will be using the option to wrap: MM3 has the option to wrap the main message with a wrap_message. It appears, however, that MM3 is oblivious to all my attempts to include whitespace, in this case a <cr>. When the enclosed message is automatically unwrapped by the receiving client, this causes the wrap and enclosed message's From: header to butt up against each other, which is rather ugly. I tried many tricks, but none worked, such as, <cr>, SPACE+, TAB+, <BLANKLINE>, SHIFT-RETURN, two RETURNS, \r\n and UTF-8 codes. They all either got ignored or copied as entered to the output message. Here’s an example. I just want to put a divider after the wrap_message main text. The From address of this message has been replaced with the list address, while the From name has 'via list' appended. Please be careful when using 'via list' addresses later for new emails, as they will be sent to the whole list.\r\n -------------------------- ----------------------------------------------------------------------\r\n From: Allan Hansen <allan_hansen(a)icloud.com <mailto:allan_hansen@icloud.com>> Subject: [Testlist] wrap with divider and BLANKLINE Which coding option am I missing? I have searched for one online. Yours, Allan Hansen allan_hansen(a)icloud.com

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Header and footer templates in MM3
by Gila Halpern Jan. 26, 2020

Jan. 26, 2020

I read the earlier message from Peter Mueller about message decoration, and where the templates are in the file system. However, when I edit the header and footer templates in Postorius, those templates do not appear in the location specified. Should I be looking somewhere else? (I intend to write a program to rotate though several headers/footers, so I need to know where to have it write to.) Gila Halpern

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Can I install Mailman 3.3 on RHEL 8 ?
by Shashikanth Komandoor Jan. 25, 2020

Jan. 25, 2020

Hi Team/Sir, Can Mailman 3.3 be installed on RHEL 8? I got this query because while I was trying to install the prerequisites for Mailman 3.3 as per the website http://docs.mailman3.org/en/latest/devsetup.html I found nodejs-less is also to be installed. But I don't find the nodejs-less as part of BaseOS packages or the AppStream modules. Please suggest how to go ahead. -- Thanks & Regards, Shashi Kanth.K 9052671936

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Cannot see the cron jobs for Mailman 3 Installed
by Shashikanth Komandoor Jan. 24, 2020

Jan. 24, 2020

Hi, I have setup the Mailman 3 on my RHEL 7.5 box and found it was working fine. But I found that I am not getting daily summary notifications for which I learnt after browsing through different websites, there should be an entry of *checkdb* in the cron job list. But I did not find any such nor I don't find any cron job updated after the installation of mailman 3. So, please guide how to get those cron jobs of mailman 3 installed again without disturbing the already installed setup. Thanks in advance. -- Thanks & Regards, Shashi Kanth.K 9052671936

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