Mailman 3 September 2017 - Mailman-Users

spam discard expressions
by Jim Dory March 8, 2018

March 8, 2018

Apparently our host provider performs spam tests only on outgoing, rather than incoming - since my spamassassin blacklists don't have any effect. So I've discovered the filters offered in Mailman after being completely buried by spammers trying to post to our subscriber only list. I've started putting these in Sender Filters: ^[^@]+@bcira\.com$ ^[^@]+@airablo\.com$ ^[^@]+@bfklaw\.com$ ^[^@]+@bettella\.com$ ^[^@]+@areallycool\.com$ ^[^@]+@aristo-tec\.com$ ^[^@]+@benallgood\.com$ ^[^@]+@al-meshkah\.com$ ^[^@]+@atoccs\.stream$ ^[^@]+@authors\.com$ ^[^@]+@aulson\.com$ ^[^@]+@atmyx\.bid$ ^[^@]+@airtecperforms\.com$ but what is the syntax for blocking domains ending in .loan .stream .trade etc, other than .com. I've been reading up on python expressions but at first reading it is a bit overwhelming - hoping for a simple example. I've also started adding in words under Spam filters such as: ^Subject: .*Phentermine ^Subject: .*F\*buddy ^Subject: .*H00kup ^Subject: .*InstaF\*ck ^Subject: .*Instacheat Wondering if anyone would care to share their lists of filters - or a good resource? thanks, Jim

6 10

Re: [Mailman-Users] "Bounce action notification" emails for subscribes/unsubscribes
by Terry . Nov. 2, 2017

Nov. 2, 2017

Hi Mark & others, Sorry for the delay in responding, and thanks for your generous offer of working with my webhost and/or cPanel to solve this. I passed that offer to my webhost, but it seems they have been able to sort it out with cPanel themselves. Here is the response from my webhost: ========================================== The issue with @mydomain.com was caused due to the setting "Discard the email while your server processes it at SMTP time with an error message" under cPanel>>Email>>Default Address. We've setup "Forward to Email Address" to catchall(a)mydomain.com<mailto:catchall@mydomain.com>. As cPanel support explained, this indicates that all mail that is delivered, but does not have an address (like mailman-bounces@) on this server will be delivered to the default account - this can potentially pose the risk of the email account receiving email for accounts that do not exist, something commonly seen when a domain is being spoofed. Otherwise, it will be rejected with "No such user here". ========================================== They then provided some evidence from a log that the problem was fixed. I then tested lists in all 7 domains, and they all sent subscribe/unsubscribe emails to me perfectly. I then asked Jim Dory (who has participated in this thread) to setup a default address for his list, and it worked for him, too. I’m confused by the wording of the above paragraph from the webhost, but maybe they mean that the server is configured to not allow emails to be sent out *from* addresses which can’t receive emails, and this is to help reduce outbound spam. (For years I’ve known that the webhost was fighting outbound spam by preventing email from being sent out from *domains* which I don’t have on that server, but maybe this even applies to the address level.) So, I guess when Mailman tries to send a subscribe/unsubscribe notification email out from mailman-bounces(a)mydomain.com<mailto:mailman-bounces@mydomain.com> to the list owner address, maybe the server blocks it, since that mailman-bounces(a)mydomain.com<mailto:mailman-bounces@mydomain.com> address doesn’t exist, as such. I tested this theory using a less overkill approach, by not using the "catchall" default address method, but just creating a forwarder (alias) for the address mailman-bounces(a)mydomain.com<mailto:mailman-bounces@mydomain.com> which redirects its mail to one of my mailboxes (even to my catchall mailbox), and that seemed to work! I don't think this is to provide an address which will receive emails resulting from subscribes/unsubscribes (since I don't think that process sends anything *to* the mailman-bounces@... address), but just to satisfy the anti-spam requirements of the system that every sending address should be able to receive email, not just bounce it. Any thoughts on this, Mark/others? Confused? I can only imagine that the problems started recently due to some update to cPanel or other change by the webhost, because having looked through the history of my subscribe/unsubscribe email notifications, it looks as if the problems only started a few months ago, but I don’t think I’ve made relevant changes to those domains for years. (When I asked the webhost about this, they responded "Unfortunately, we cannot be sure about this. The cPanel representatives haven't mentioned about any recent changes to the Exim configuration.") Anyway, here is a summary of my subscribe/unsubscribe notification problems that seem to have been resolved by setting the default addresses for my domains to my catchall address, instead of bouncing emails sent to non-existent addresses: 1. For some of my domains/lists I’d receive notifications as *attachments* to emails which have the subject “Bounce action notification” (as per my 1st post). 2. For some of my domains/lists I’d receive subscribe emails as *attachments*, but not receive anything for unsubscribes. (Might be the other way round sometimes.) 3. For some of my domains/lists I’d receive no subscribe or unsubscribe emails at all (as per my 3rd post). Thanks. Terry

4 12

DKIM / DMARC woes...
by Grant Taylor Oct. 3, 2017

Oct. 3, 2017

Hello, Does setting from_is_list and / or dmarc_moderation_action to munge cause Mailman to do anything with existing DKIM-Signature headers? Will they be removed or left there? -- Grant. . . . unix || die

2 6

bulk subscribe 7K users
by Dimitri Maziuk Oct. 2, 2017

Oct. 2, 2017

Hi all, a few days ago I made a mistake (?) of uploading a list of ~7000 addresses into the "bulk subscribe" box. None of them made it into the subscriber list, but at least some of the welcome e-mails went out. Question: what is mailman actually doing? Is it waiting for all the retries and bounces before it updates the subscriber list? Or has it failed and I need to re-do the whole thing? I see some of those addresses in the logs so it looks like it's the former. If it is, is there any way to monitor mailman's progress? (mailman 2.1.12 on centos 6.9) Thanks in advance, -- Dimitri Maziuk Programmer/sysadmin BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

6 28

Munging the listinfo.html page automagically.
by The Mailing List Server Admin Sept. 28, 2017

Sept. 28, 2017

So I see that if I edit the list's listinfo.html page using the list's own "HTML Page Editing" feature, the new edited file suddenly appears in: ~mailman/lists/the-list-name/en/listinfo.html Slick. So if I wanted to make a programatic change to select group of new lists, would it really be just as easy as... pipe ~mailman/templates/site/en/listinfo.html ---> through a filter script ----> to write ~mailman/lists/the-list-name/en/listinfo.html It seems to work. But are there any gottchas waiting to bite me if I take this simplistic approach? BTW -- I like that the template file has an embedded revision number...  so the script could refuse to filter a version of the template that it is not expecting. (Using Mailman version: 2.1.20) -- Cordially, the UNH Mailing List Server Admins Bill Costa, Adjunct Admin (603) 862-3056

2 1

Recent phishing mails are targeting mailing-lists -- and do pass
by Ralf Hildebrandt Sept. 27, 2017

Sept. 27, 2017

Recent phishing mails are targeting mailing-lists -- and do pass. >From our logs: Sep 25 12:10:41 2017 (1940) post to rundmail-it from sabishi.meister(a)charite.de, size=4760, message-id=<486320030245.201792592050(a)charite.de>, success But the headers of the mail that was automatically passed (since sabishi.meister(a)charite.de is a member) was: From: "Sabishi.Meister@" <charite.de events(a)tryphotels.ae> -- Ralf Hildebrandt Charite Universitätsmedizin Berlin ralf.hildebrandt(a)charite.de Campus Benjamin Franklin https://www.charite.de Hindenburgdamm 30, 12203 Berlin Geschäftsbereich IT, Abt. Netzwerk fon: +49-30-450.570.155

6 6

Re: [Mailman-Users] Correct Mailman setup (was: List adds information to sender's name)
by Robert Heller Sept. 23, 2017

Sept. 23, 2017

For some reason, you sent this to just me (Robert Heller <heller(a)deepsoft.com>). I am replying and including the list (mailman-users(a)python.org) on the CC. At Fri, 22 Sep 2017 17:57:36 +0200 luscheina(a)yahoo.de wrote: > > > Hi all > > I have now read through the web pages Mark Sapiro proposed on Wednesday > - and I am more confused than before about all this. After contacting > our hoster (who told me that we are the only one of his clients who uses > Mailman and that he can't help me here), I ask the collective of all > knowledgeable people to help me configure Mailman (v 2.1.23 on cPanel) > so that there are the least possible problems. > > There are in total 5 lists: > > 3 of them are discussion lists for various subjects. All members are > allowed to reply to all messages, and all these replies should go to the > list / distributed to all members. > > 2 of them are announcement lists - members should normally not be > allowed to post anything; therefore all are set to "moderated". > > All lists have members who use various mail domains, so I cannot be sure > about any odd behaviour of their mail servers > > All lists are more or less working, but every now and then some people > complain about something. The most annoying thing is that messages are > processed but then queued for up to one hour before they go out. The > mail system is on the same virtual server, and the provider has no idea > what to do. Otherwise the mail server does not ause problems, any > message submitted normally (not via Mailman) goes out nearly instantly. > I would appreciate if a knowledgeable person could guide me through the > proper setup of these lists. > > Thanks, Christian -- Robert Heller -- 978-544-6933 Deepwoods Software -- Custom Software Services http://www.deepsoft.com/ -- Linux Administration Services heller(a)deepsoft.com -- Webhosting Services

4 3

Re: [Mailman-Users] spam discard expressions
by Jim Dory Sept. 23, 2017

Sept. 23, 2017

I'm trying to ask a question about spam filters, using an example of spam I'm getting, but I'm getting this error: The response was: 554 permanent error Contact your postmaster/admin for assistance. Please provide the following information in your problem report: time (Sep 22 22:16:42) and client (2607:f8b0:400e:c05::231). Anyway around this? /jim

2 3

List adds information to sender's name
by Christian F Buser Sept. 20, 2017

Sept. 20, 2017

Hi On a list using Mailman 2.1.23 (on cpanel 66.0.23) I have noticed the following effects: Most messages appear with the author's name and in the "From:"-field in the same form as the author has set up in his mail application. However, some show additional information like "Realname via Listname". I have analyzed some of those messages, and it appears that this only happens when the author puts his own address in the "Cc:"-field (= sends a copy to himself). Then I have tried to double-check the behaviour and put my own address in a message to the list. Surprisingly, the message was delivered directly to me, but the list never sent it to me so I could not check whether "...via listname" was also appended to my "From:"-address. I have seen the message in the list's archive; there it is without "...via listname". Is this normal behaviour? Can the list be configured to not append the "...via listname" information to these messages? And why do I not receive my message via the list but only directly? Thank you for all ideas, Christian -- Christian F. Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland) Hilfe für Strassenkinder in Ghana: http://www.chance-for-children.org .

3 4

Re: [Mailman-Users] List adds information to sender's name
by Christian F Buser Sept. 20, 2017

Sept. 20, 2017

Hello Christian F Buser. On Tue, 19 Sep 2017 21:56:56 +0200, you wrote: >> You are seeing the "Mung From" option behaviour. > > But why does this not happen with all list messages; only with a part > of them? I thought it was coming from the fact that the authors cc'ed > themselves - but a test message where I put my own address in cc did > not "munge" the sender's address... And, additionally: why does my original question have "via Mailman-Users" appended, while my reply (using the same mail app and the same settings) does not? And why, when I reply to a message on this list, is the reply only going to the author of the message and not to the list? Of course, this may be a setting of the Mailman-Users list, but I do not understand why anyone should do it this way... Christian -- Christian F. Buser, Hohle Gasse 6, CH-5507 Mellingen (Switzerland) Hilfe fuer Strassenkinder in Ghana: http://www.chance-for-children.org .

2 1