August 2020 - Mailman-users - lists.mailman3.org

Find a smtp server to send out emails
by Leon Aug. 1, 2026

Aug. 1, 2026

Hi, This problem is not caused by mailman, but I still want to give it a shot here. I'm hosting a mailing list on top of mailman3. Emails are supposed to be sent out by AWS ses. However, ses requires that sender address must be verified, which leads to a problem that emails sent by subscribers to mailing list cannot be sent to other subcirbers, since their addresses are not verified. And it is impossible to verified every subscriber. Are there smtp service providers allowing unverified email address to send out emails, or do I have other solutions? Thanks. -- Best wishes, Leon

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Xapian alternatives
by Andrew Bernard Nov. 11, 2025

Nov. 11, 2025

Are there alternative search engines to Xapian that can be used for Mailman 3? I have come to understand that Xapian development stalled in the v2.0 attempt.

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Moderation of held emails vs. spam
by David Krantz March 11, 2025

March 11, 2025

Hi, I now run Mailman 3.3.1, installed from pip. Is there now any way to prevent Mailman from forwarding the contents of the held message when notifying moderators of held messages? In my case these messages often are spam messages and if the entire contents are forwarded it triggers spam handling in the recipient address(es) which over time risks classifying all moderation emails as spam or even classifying the list domain or server as a spam source. Even my own outgoing filter classifies it as spam, which I will fix. I currently run rspamd for spam filtering, graylisting and DKIM and ARC verification/signing. Someone on this recommended it, thank you for that as it removes the need for other milters. I guess that this would be a simple change to make as a kludge but a proper implementation as a setting would be a lot better. I'd like it as a global setting but that might be too coarse. Cheers // David

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Re: mail stuck in "out" queue
by Dmitry Makovey Dec. 18, 2024

Dec. 18, 2024

So our mailman got stuck again, but I did follow your advise. Here's what I've found: On 3/29/19 2:58 PM, Mark Sapiro wrote: > On 3/29/19 2:28 PM, Dmitry Makovey wrote: >> I've had encountered this situation now twice: mail is being stuck in >> "out" queue and nothing in the logs indicates the issue. Is there a way >> to ask mailman-core politely to attempt delivery (perhaps with increased >> debugging in the logs) *without* restarting the core (which does solve >> *this* problem but creates other problems, like availability of the >> mailman as a whole) > > > Is the "out" runner running? yes: # docker top mailman-core | grep -F out: 100 21681 13215 0 Mar28 ? 01:14:16 /usr/local/bin/python /usr/local/bin/runner --runner=out:0:1 -C /etc/mailman.cfg > ps -fwwA |grep runner=out > > If not, you should be able to start it as the Mailman user with a > command like > > /path/to/python3 /path/to/mailman/bin/runner -C /path/to/mailman.cfg > --runner=out:0:1 > > See 'ps -fwwA|grep runner' for examples > > If the out runner is running, is there a file named *.bak along with all > the *.pck files in queue/out/ there is one, yes: # ls -l /srv/mail/mailman/core/var/queue/out/*.bak -rw-rw---- 1 100 65533 21512 Apr 14 19:45 /srv/mail/mailman/core/var/queue/out/1555296331.8386078+2c905825b82708e5a682b872b0aff320c9dd0b2e.bak what does it indicate and what should my steps be to resolve this (other than restarting queues)? > And if it's not, is there anything in Mailman's logs to indicate why it > died? > > Also, 'mailman restart' should only take a matter of seconds, but if the > out runner is running but not processing its queue, I think sending it a > SIGINT should restart it. SIGINT killed the process allright, but it didn't auto-respawn. I ended up spawning it with: /usr/local/bin/python /usr/local/bin/runner --runner=out:0:1 -C /etc/mailman.cfg but soon realized it doesn't go to background nicely so I've nohup'ed it in the end. but it did solve my problem. -- Sr System and DevOps Engineer SoM IRT

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Logging subscribes/unsubscribes
by Brian Carpenter Oct. 22, 2024

Oct. 22, 2024

Does Mailman 3 log subscribes and unsubscribes for each list the way Mailman 2 did? Brian

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Questions regarding message acceptance
by Pawel Grzywaczewski Sept. 19, 2024

Sept. 19, 2024

Hello, I have few questions regarding usage of Mailman3: 1) We have list1 and list2 with members. Can we specify that all members of list1 can post messages to list2? We could potentially write a script that would synchronize members of another list to “Accept these non-members” of another list, but with thousands of lists it will be difficult to maintain lists in synchro. So perhaps there is a concept of adding another list to “Accept these non-members” and mailman real-time evaluate membership of another list upon message arrival? 2) In explanation of “Accept these non-members” it’s written: “While non-regexp addresses can be entered here, it is preferred to add the address as a nonmember and set the nonmember's Moderation to Default Processing”. I noticed that if someone posts to a list then he is added automatically to non-members. Which means that next time he will be able to post. My understanding is that it’s better to use the feature “Accept these non-members”. Am I correct? Thank you, Paweł

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Display the last post time for a list or all lists.
by Henrik Rasmussen Aug. 9, 2024

Aug. 9, 2024

Does Mailman 3 have something similar to https://www.msapiro.net/scripts/last_post.py displaying the last post time for a list or all lists?

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hyperkitty.lib.utils Failed to update the fulltext index
by Ben Harris April 13, 2024

April 13, 2024

hello there, i migrated to a new host last night and i've been getting this error from a cronjob mail every minute. anyone have any ideas what would cause this? ERROR 2019-04-17 14:26:33,056 27205 hyperkitty.lib.utils Failed to update the fulltext index: ord() expected a character, but string of length 0 found Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/hyperkitty/lib/utils.py", line 186, in run_with_lock fn(*args, **kwargs) File "/usr/lib/python2.7/dist-packages/hyperkitty/search_indexes.py", line 87, in update_index update_cmd.update_backend("hyperkitty", "default") File "/usr/lib/python2.7/dist-packages/haystack/management/commands/update_index.py", line 276, in update_backend last_max_pk=max_pk) File "/usr/lib/python2.7/dist-packages/haystack/management/commands/update_index.py", line 97, in do_update backend.update(index, current_qs, commit=commit) File "/usr/lib/python2.7/dist-packages/haystack/backends/whoosh_backend.py", line 178, in update self.setup() File "/usr/lib/python2.7/dist-packages/haystack/backends/whoosh_backend.py", line 126, in setup self.index = self.storage.open_index(schema=self.schema) File "/usr/lib/python2.7/dist-packages/whoosh/filedb/filestore.py", line 176, in open_index return indexclass(self, schema=schema, indexname=indexname) File "/usr/lib/python2.7/dist-packages/whoosh/index.py", line 421, in __init__ TOC.read(self.storage, self.indexname, schema=self._schema) File "/usr/lib/python2.7/dist-packages/whoosh/index.py", line 632, in read check_size("int", _INT_SIZE) File "/usr/lib/python2.7/dist-packages/whoosh/index.py", line 626, in check_size sz = stream.read_varint() File "/usr/lib/python2.7/dist-packages/whoosh/filedb/structfile.py", line 191, in read_varint return read_varint(self.read) File "/usr/lib/python2.7/dist-packages/whoosh/util/varints.py", line 102, in read_varint b = ord(readfn(1)) thanks, ben

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Splitting hosts: mta&core vs postorius
by Ruth Ivimey-Cook Jan. 18, 2024

Jan. 18, 2024

I'm trying to set up mailman3 on two hosts, one of which runs core + exim, the other runs postorius (&possibly hyperkitty). I have I think got core set up correctly, and postorius is sort of usable, but anything in the web ui that talks to core ends up with a white screen. I think what is happening is a postorius URL ends up with the core (or perhaps no) hostname, and as there's nothing there to answer it fails. I've checked the settings and I don't think I have misconfigured postorius. Is it possible that the bad url is being passed from core to postorius in some way and reused without changing the host? In the config at present, both hosts are visible to the browser, and each host can communicate with the other. Any ideas on how to pin down the problem better? Ruth

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Loops back to myself
by David Krantz Jan. 12, 2024

Jan. 12, 2024

Hi, I have a problem with my Mailman 3-setup. The symptom is that postfix rejects non-existing addresses for my list domains with <adr(a)example.com>: mail for example.com loops back to myself What I guess happens happens is that postfix for some reason accepts the mail as it is for a relay domain and finds that it is not deliverable locally as the address does not exist locally and then tries to relay it on to the appropriate MX server, which is itself and then fails and generates a bounce message. This is a bit annoying as I have set up postfix to only accept valid addresses. I have set the transport_maps, local_recipient_maps and relay_domains to the files generated by MM3. I run an older version of MM3 (3.0) but prefer to fix this without upgrading as upgrading is a relatively big undertaking. This is mostly a backscatter problem for spam I guess. Any ideas of very simple and easy to forget things that I've probably missed? Cheers // David

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