Thanks for keeping us in the loop on possible fixes in case one of us
encounters a similar problem.
-----Original Message-----
From: Andrew Hodgson via Blind-sysadmins
Sent: Friday, September 22, 2023 6:45 AM
To: Mailing list for blind system administrators
Cc: Andrew Hodgson
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Hi.
We had this happen again this morning. From more info obtained from
Microsoft support I have now enabled VERP on all messages so they get dealt
with in a single SMTP transaction per user.
Thanks.
Andrew.
-----Original Message-----
From: Billy Irwin via Blind-sysadmins
Sent: Thursday, September 21, 2023 8:02 PM
To: Mailing list for blind system administrators
Cc: Billy Irwin
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Awesome! I hope it solves your issue.
Best,
Billy
-----Original Message-----
From: Andrew Hodgson via Blind-sysadmins
Sent: Thursday, September 21, 2023 2:50 PM
To: Mailing list for blind system administrators
Cc: Andrew Hodgson
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Its now on.
Andrew.
-----Original Message-----
From: Andrew Hodgson
Sent: Thursday, September 21, 2023 7:46 PM
To: Mailing list for blind system administrators
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Hi.
I'm looking at the patch but will probably turn this feature on in a bit
anyway.
Andrew.
-----Original Message-----
From: Billy Irwin
Sent: Thursday, September 21, 2023 7:36 PM
To: Mailing list for blind system administrators
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Hi Andrew,
On all of our customers with Mailman lists, we do the "Munge From" option
and have no issues. I think the number of mailman lists we are dong this on
is well around 1000 plus. It is really frustrating that these big companies
can do things out side an agreed standard. I digress!
Best,
Billy
-----Original Message-----
From: Andrew Hodgson
Sent: Thursday, September 21, 2023 2:32 PM
To: Mailing list for blind system administrators
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Hi.
Just received the following from the Mailman-Users list, I'm inclined to
believe this since the issue only happened for this list and I'm dealing
with another list with traffic but the originators of the messages aren't
posting from Gmail addresses. All outbound email from these lists are going
through Exchange Online Protection.
Andrew.
This is almost certainly due to a recent policy change at Gmail, where they
are requiring "from alignment"[1] but only for Gmail authors.
That is, Gmail does not publish a p=reject policy, but the effect on Gmail
recipients (only) is the same as if they did -- they all bounce every time a
Gmail user posts.
Mark has a patch in process, search recent archives of this list for a
pointer to it.
Instead of the patch, you can set the "munge from" option for all users
instead of the option for p=reject domains only. Or you could ban Gmail
addresses from posting. ;-)
Footnotes:
[1] "From alignment" is the requirement in DMARC for p=reject or
p=quarantine policies that there be a valid DKIM signature from the author's
email domain (ie, the From address)
-----Original Message-----
From: Billy Irwin
Sent: Thursday, September 21, 2023 6:56 PM
To: Mailing list for blind system administrators
Subject: [Blind-sysadmins] Re: Gmail users kicked off the list
Hi Andrew,
You may or may not know, but I figured I would offer up a thought on this.
If you got the error from Gmail stating something like "due to complaints",
it is quite a bit misleading. I have seen Google do this with all of my web
hosting infrastructure just because of the formatting of email list traffic
or the amount of connections made to their servers. I have spent more time
than I care to recount dealing with and learning how to get mail delivered
in a large enterprise environment.
If I can help you out in anyway, please don't hesitate to ask.
Good luck,
Billy
-----Original Message-----
From: Andrew Hodgson
Sent: Thursday, September 21, 2023 5:45 AM
To: Blind sysadmins list
Subject: [Blind-sysadmins] Gmail users kicked off the list
Hi.
Due to someone marking messages from this list as spam all the Gmail users
have been kicked off. I've re-enabled delivery for all users now since I
don't know who was marking the messages as spam. If you want to be removed
from the list please speak to me and I can arrange it.
Thanks.
Andrew.
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