Barrage of bounce notifications
![](https://secure.gravatar.com/avatar/f58f99f7326f36ef8645d5a5ea3188ca.jpg?s=120&d=mm&r=g)
Good afternoon all,
I manage a few listservs (maintaining members and tending pending posts) and today I have received almost 80 separate "Uncaught bounce notification" emails for one of the lists. There are rarely any for this list and I would like to know if there is something I can do to stop the spam. I have received 5 more while typing this email. I am not a tech person but any suggestions are welcome.
Thank you!
Elizabeth
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
What is the content of the emails you've received? I mean at least give us a sample. You can obfuscate email addresses if you want, but not the actual error.
On Thu, May 25, 2023 at 5:10 PM Krone, Elizabeth C via Mailman-Users < mailman-users@python.org> wrote:
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/f58f99f7326f36ef8645d5a5ea3188ca.jpg?s=120&d=mm&r=g)
Hello, Here is more information: * We are on Mailman version 2.1.39 * I received over 300 emails from "Mailman-bounces" yesterday * They seem to have slowed down today * These are the type of spam emails I that are being received: ***SPAM*** Hi there my great pen-friend, SL Smilesx Lonelyeo <s.nagaya@nifty.com> To: * ecdugie@hotmail.com Thu 5/25/2023 1:29 AM If there is a different Lsoft group I should be asking questions to, can someone point me in the correct direction? Apologies for posting to the wring group! Thank you!! ________________________________ From: Barry S. Finkel <bsfinkel@att.net> Sent: Thursday, May 25, 2023 12:28 PM To: mailman-users@python.org <mailman-users@python.org> Subject: [EXTERNAL] [Mailman-Users] Re: Barrage of bounce notifications This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding. On 5/24/2023 12:29 PM, Krone, Elizabeth C via Mailman-Users wrote:
Mailman is NOT listserv. Listserv is a different mailing list management software from Lsoft. --Barry Finkel ------------------------------------------------------ Mailman-Users mailing list -- mailman-users@python.org To unsubscribe send an email to mailman-users-leave@python.org https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.python.org%2Fmailman3%2Flists%2Fmailman-users.python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=eKr7%2B5HHdfo7uqLDhbqz36HtX6xpwchAIeyobENthkI%3D&reserved=0<https://mail.python.org/mailman3/lists/mailman-users.python.org/> Mailman FAQ: https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwiki.list.org%2Fx%2FAgA3&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=WWF5MaH2o7%2BGZx6YoXSRDTjVr%2BPzHr%2FVtekB9jPpEpo%3D&reserved=0<http://wiki.list.org/x/AgA3> Security Policy: https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwiki.list.org%2Fx%2FQIA9&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=r7h31SqselhjCrABQ%2F2TC487xmM0R5Cv0yEv0xTcjts%3D&reserved=0<http://wiki.list.org/x/QIA9> Searchable Archives: https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fmailman-users%40python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EzUb%2B09nqyKI0LcloEqNhz15lgPzmYZ%2B6apHhuBDO7U%3D&reserved=0<https://www.mail-archive.com/mailman-users@python.org/> https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.python.org%2Farchives%2Flist%2Fmailman-users%40python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5UNd3IgODbD4Xf2iONUtJAG%2Bx6YuyzVndaOgpl7y558%3D&reserved=0<https://mail.python.org/archives/list/mailman-users@python.org/> Member address: elizabeth_krone@fws.gov
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
I think you need to change the list settings, hoping you have Admin rights: You need to change in Privacy options -> Sender Filters -> Action to take for postings from non-members for which no explicit action is defined = Discard. If you use 'Reject', you'll be sending back messages to spammers using non-deliverable addresses and that would lead to what you are seeing. I am just guessing that your list is set to 'Reject' instead of 'Discard'. On Thu, May 25, 2023 at 8:02 PM Krone, Elizabeth C via Mailman-Users < mailman-users@python.org> wrote:
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/56f108518d7ee2544412cc80978e3182.jpg?s=120&d=mm&r=g)
On 5/25/23 10:13 AM, Odhiambo Washington wrote:
These settings apply only to list posts, not to mail to the list-bounces address.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
- Mark Sapiro <mark@msapiro.net>:
But those can be disabled as well: bounce_unrecognized_goes_to_list_owner => no on the subpage "bounce"
-- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
On Fri, May 26, 2023 at 9:34 AM Ralf Hildebrandt via Mailman-Users < mailman-users@python.org> wrote:
In this case then what happens when such a bounce arrives? MM2.1 discards it?
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
I think so
Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/56f108518d7ee2544412cc80978e3182.jpg?s=120&d=mm&r=g)
On 5/25/23 11:52 PM, Ralf Hildebrandt via Mailman-Users wrote:
Yes, unrecognized bounces are not processed other than sending them to the list owner if bounce_unrecognized_goes_to_list_owner => yes.
The theory is these may be legitimate bounces that just aren't recognized and the owner may want to see them and may even want to report them to the developers so the recognizers can be updated, but these days, such bounces are extremely rare so if one is getting a lot of spam to the list-bounces address, setting bounce_unrecognized_goes_to_list_owner => no makes sense.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
On $LIST-bounces I'm mostly getting mails that should go to the list address, sinc ethe users somehow managed to bookmark their VERPidfied sender address as "list address"
-- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/5e11baf17b08bd7432a062b597662a04.jpg?s=120&d=mm&r=g)
I've been administering mailman for 20-some odd years now; I don't think I've ever seen an unrecognized bounce that wasn't someone who simply replied to (or emailed directly because they'd added it to their contacts/address book) the envelope "bounce" address.
--Gretchen
Gretchen Beck Carnegie Mellon University
On Fri, May 26, 2023 at 10:54 AM Ralf Hildebrandt via Mailman-Users < mailman-users@python.org> wrote:
![](https://secure.gravatar.com/avatar/91d4ad5d2d8c192b3d6d683f40eb80e8.jpg?s=120&d=mm&r=g)
On May 26, 2023, at 7:52 AM, Ralf Hildebrandt via Mailman-Users <mailman-users@python.org<mailto:mailman-users@python.org>> wrote:
External Email
The theory is these may be legitimate bounces that just aren't recognized and the owner may want to see them and may even want to report them to the developers so the recognizers can be updated, but these days, such bounces are extremely rare so if one is getting a lot of spam to the list-bounces address, setting bounce_unrecognized_goes_to_list_owner => no makes sense.
On $LIST-bounces I'm mostly getting mails that should go to the list address, sinc ethe users somehow managed to bookmark their VERPidfied sender address as "list address"
Blame their email client’s ‘recently seen addresses’ list; Outlook is particularly adept at this, since many of our lists are moderated, or member-only and the ‘Your email is awaiting approval’ messages come from the [listname]-bounces address. They start typing the address in the To: line and it will autofill, and they don’t notice the ‘-bounces’ part while the actual address is visible instead of the name the client conjures up for it.
-- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group
Institutions do not have opinions, merely customs
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On 5/25/23 9:55 AM, Krone, Elizabeth C via Mailman-Users wrote:
So it appears you have some spam filtering. Mailman can filter list posts based on a match to '***SPAM***' in the Subject, but this won't apply to mail to the -bounces address.
If there is a different Lsoft group I should be asking questions to, can someone point me in the correct direction? Apologies for posting to the wring group!
Mailman-users@python.org is the correct list. Barry Finkel was not saying you should post to Lsoft. He was saying that `listserv` is a registered trademark of Lsoft and should not be used generically to refer to Mailman lists. Again, see https://wiki.list.org/DOC/Mailman%20is%20not%20Listserv -- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/56f108518d7ee2544412cc80978e3182.jpg?s=120&d=mm&r=g)
On 5/24/23 10:29 AM, Krone, Elizabeth C via Mailman-Users wrote:
Good afternoon all,
I manage a few listservs (maintaining members and tending pending posts) and today I have received almost 80 separate "Uncaught bounce notification" emails for one of the lists. There are rarely any for this list and I would like to know if there is something I can do to stop the spam. I have received 5 more while typing this email. I am not a tech person but any suggestions are welcome.
These are almost certainly spam sent to the list-bounces address as opposed to real bounces that are not recognized.
You need to install some kind of spam filtering in the MTA ahead of Mailman.
As Barry Finkel says, see https://wiki.list.org/DOC/Mailman%20is%20not%20Listserv
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
What is the content of the emails you've received? I mean at least give us a sample. You can obfuscate email addresses if you want, but not the actual error.
On Thu, May 25, 2023 at 5:10 PM Krone, Elizabeth C via Mailman-Users < mailman-users@python.org> wrote:
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/f58f99f7326f36ef8645d5a5ea3188ca.jpg?s=120&d=mm&r=g)
Hello, Here is more information: * We are on Mailman version 2.1.39 * I received over 300 emails from "Mailman-bounces" yesterday * They seem to have slowed down today * These are the type of spam emails I that are being received: ***SPAM*** Hi there my great pen-friend, SL Smilesx Lonelyeo <s.nagaya@nifty.com> To: * ecdugie@hotmail.com Thu 5/25/2023 1:29 AM If there is a different Lsoft group I should be asking questions to, can someone point me in the correct direction? Apologies for posting to the wring group! Thank you!! ________________________________ From: Barry S. Finkel <bsfinkel@att.net> Sent: Thursday, May 25, 2023 12:28 PM To: mailman-users@python.org <mailman-users@python.org> Subject: [EXTERNAL] [Mailman-Users] Re: Barrage of bounce notifications This email has been received from outside of DOI - Use caution before clicking on links, opening attachments, or responding. On 5/24/2023 12:29 PM, Krone, Elizabeth C via Mailman-Users wrote:
Mailman is NOT listserv. Listserv is a different mailing list management software from Lsoft. --Barry Finkel ------------------------------------------------------ Mailman-Users mailing list -- mailman-users@python.org To unsubscribe send an email to mailman-users-leave@python.org https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.python.org%2Fmailman3%2Flists%2Fmailman-users.python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=eKr7%2B5HHdfo7uqLDhbqz36HtX6xpwchAIeyobENthkI%3D&reserved=0<https://mail.python.org/mailman3/lists/mailman-users.python.org/> Mailman FAQ: https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwiki.list.org%2Fx%2FAgA3&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=WWF5MaH2o7%2BGZx6YoXSRDTjVr%2BPzHr%2FVtekB9jPpEpo%3D&reserved=0<http://wiki.list.org/x/AgA3> Security Policy: https://gcc02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwiki.list.org%2Fx%2FQIA9&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=r7h31SqselhjCrABQ%2F2TC487xmM0R5Cv0yEv0xTcjts%3D&reserved=0<http://wiki.list.org/x/QIA9> Searchable Archives: https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fmailman-users%40python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=EzUb%2B09nqyKI0LcloEqNhz15lgPzmYZ%2B6apHhuBDO7U%3D&reserved=0<https://www.mail-archive.com/mailman-users@python.org/> https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmail.python.org%2Farchives%2Flist%2Fmailman-users%40python.org%2F&data=05%7C01%7Celizabeth_krone%40fws.gov%7C5202637e81774e99a40408db5d3d6485%7C0693b5ba4b184d7b9341f32f400a5494%7C0%7C0%7C638206290487395104%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=5UNd3IgODbD4Xf2iONUtJAG%2Bx6YuyzVndaOgpl7y558%3D&reserved=0<https://mail.python.org/archives/list/mailman-users@python.org/> Member address: elizabeth_krone@fws.gov
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
I think you need to change the list settings, hoping you have Admin rights: You need to change in Privacy options -> Sender Filters -> Action to take for postings from non-members for which no explicit action is defined = Discard. If you use 'Reject', you'll be sending back messages to spammers using non-deliverable addresses and that would lead to what you are seeing. I am just guessing that your list is set to 'Reject' instead of 'Discard'. On Thu, May 25, 2023 at 8:02 PM Krone, Elizabeth C via Mailman-Users < mailman-users@python.org> wrote:
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/56f108518d7ee2544412cc80978e3182.jpg?s=120&d=mm&r=g)
On 5/25/23 10:13 AM, Odhiambo Washington wrote:
These settings apply only to list posts, not to mail to the list-bounces address.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
- Mark Sapiro <mark@msapiro.net>:
But those can be disabled as well: bounce_unrecognized_goes_to_list_owner => no on the subpage "bounce"
-- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/0fbcef57d028af495d8c9a5992405f78.jpg?s=120&d=mm&r=g)
On Fri, May 26, 2023 at 9:34 AM Ralf Hildebrandt via Mailman-Users < mailman-users@python.org> wrote:
In this case then what happens when such a bounce arrives? MM2.1 discards it?
-- Best regards, Odhiambo WASHINGTON, Nairobi,KE +254 7 3200 0004/+254 7 2274 3223 "Oh, the cruft.", egrep -v '^$|^.*#' ¯\_(ツ)_/¯ :-) [How to ask smart questions: http://www.catb.org/~esr/faqs/smart-questions.html]
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
I think so
Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/56f108518d7ee2544412cc80978e3182.jpg?s=120&d=mm&r=g)
On 5/25/23 11:52 PM, Ralf Hildebrandt via Mailman-Users wrote:
Yes, unrecognized bounces are not processed other than sending them to the list owner if bounce_unrecognized_goes_to_list_owner => yes.
The theory is these may be legitimate bounces that just aren't recognized and the owner may want to see them and may even want to report them to the developers so the recognizers can be updated, but these days, such bounces are extremely rare so if one is getting a lot of spam to the list-bounces address, setting bounce_unrecognized_goes_to_list_owner => no makes sense.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
![](https://secure.gravatar.com/avatar/267565c6ab7816fe29beedf9a9cbcd44.jpg?s=120&d=mm&r=g)
On $LIST-bounces I'm mostly getting mails that should go to the list address, sinc ethe users somehow managed to bookmark their VERPidfied sender address as "list address"
-- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netzwerk
Campus Benjamin Franklin (CBF) Haus I | 1. OG | Raum 105 Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 ralf.hildebrandt@charite.de https://www.charite.de
![](https://secure.gravatar.com/avatar/5e11baf17b08bd7432a062b597662a04.jpg?s=120&d=mm&r=g)
I've been administering mailman for 20-some odd years now; I don't think I've ever seen an unrecognized bounce that wasn't someone who simply replied to (or emailed directly because they'd added it to their contacts/address book) the envelope "bounce" address.
--Gretchen
Gretchen Beck Carnegie Mellon University
On Fri, May 26, 2023 at 10:54 AM Ralf Hildebrandt via Mailman-Users < mailman-users@python.org> wrote:
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On May 26, 2023, at 7:52 AM, Ralf Hildebrandt via Mailman-Users <mailman-users@python.org<mailto:mailman-users@python.org>> wrote:
External Email
The theory is these may be legitimate bounces that just aren't recognized and the owner may want to see them and may even want to report them to the developers so the recognizers can be updated, but these days, such bounces are extremely rare so if one is getting a lot of spam to the list-bounces address, setting bounce_unrecognized_goes_to_list_owner => no makes sense.
On $LIST-bounces I'm mostly getting mails that should go to the list address, sinc ethe users somehow managed to bookmark their VERPidfied sender address as "list address"
Blame their email client’s ‘recently seen addresses’ list; Outlook is particularly adept at this, since many of our lists are moderated, or member-only and the ‘Your email is awaiting approval’ messages come from the [listname]-bounces address. They start typing the address in the To: line and it will autofill, and they don’t notice the ‘-bounces’ part while the actual address is visible instead of the name the client conjures up for it.
-- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group
Institutions do not have opinions, merely customs
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On 5/25/23 9:55 AM, Krone, Elizabeth C via Mailman-Users wrote:
So it appears you have some spam filtering. Mailman can filter list posts based on a match to '***SPAM***' in the Subject, but this won't apply to mail to the -bounces address.
If there is a different Lsoft group I should be asking questions to, can someone point me in the correct direction? Apologies for posting to the wring group!
Mailman-users@python.org is the correct list. Barry Finkel was not saying you should post to Lsoft. He was saying that `listserv` is a registered trademark of Lsoft and should not be used generically to refer to Mailman lists. Again, see https://wiki.list.org/DOC/Mailman%20is%20not%20Listserv -- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
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On 5/24/23 10:29 AM, Krone, Elizabeth C via Mailman-Users wrote:
Good afternoon all,
I manage a few listservs (maintaining members and tending pending posts) and today I have received almost 80 separate "Uncaught bounce notification" emails for one of the lists. There are rarely any for this list and I would like to know if there is something I can do to stop the spam. I have received 5 more while typing this email. I am not a tech person but any suggestions are welcome.
These are almost certainly spam sent to the list-bounces address as opposed to real bounces that are not recognized.
You need to install some kind of spam filtering in the MTA ahead of Mailman.
As Barry Finkel says, see https://wiki.list.org/DOC/Mailman%20is%20not%20Listserv
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (7)
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Barry S. Finkel
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Gretchen Beck
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Johnson, Bruce E - (bjohnson)
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Krone, Elizabeth C
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Mark Sapiro
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Odhiambo Washington
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Ralf Hildebrandt