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Date: Tue, 28 Oct 2025 11:49:14 +1100
To: cygwin AT cygwin DOT com
Subject: Re: Has there been a mailing list outage revently?
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From: Duncan Roe via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Duncan Roe <duncan_roe AT optusnet DOT com DOT au>
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Hi Brien,

On Thu, Oct 16, 2025 at 03:22:32PM -0600, cygwin wrote:
> On 2025-10-16 02:03, Duncan Roe via Cygwin wrote:
> > This is getting weird. I re-sent the 2 messages and they didn't get
> > to cygwin *again*. I guess some pattern in their content must be
> > triggering cygwin's spam filter. I'm contemplating sending them as
> > gzipped attachments - does anyone know if the spam filter unzips
> > those and checks them anyway?
>
> Could it be due to Oz or Optus limits, rules, or policies about content?
>
> https://www.optus.com.au/support/answer/can_t_send_or_receive_email_optusnet_troubleshooting_2084
>
> https://www.optus.com.au/for-you/support/answer?id=20316
>
> https://www.optus.com.au/content/dam/optus/appendix/Appendix%20S/AppS.doc
>
> I've seen stuff happen with personal ISP local emails to family being
> blocked from sending, or delayed hours by outsourced US-based miltering
> provider.
>
> --
> Take care. Thanks, Brian Inglis              Calgary, Alberta, Canada
>
The 2 re-sent emails arrived today, 13 days after I sent them. Possible mail
headers of interest:

| Received: by sourceware.org (Postfix, from userid 0)
|  id 7B46C3858D20; Mon, 27 Oct 2025 19:10:03 +0000 (GMT)
| DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 7B46C3858D20
| Resent-From: root <root AT server2 DOT sourceware DOT org>
| Resent-Date: Mon, 27 Oct 2025 19:10:03 +0000
| Resent-Message-ID: <aP/Di4qXErci3l2Z AT server2 DOT sourceware DOT org>
| Resent-To: cygwin AT cygwin DOT com
| X-Original-To: spam AT localhost
| Delivered-To: spam AT localhost
| Received: from omr-waratah-01.pc5.atmailcloud.com
|  (omr-waratah-01.pc5.atmailcloud.com [103.150.252.185])
|  by sourceware.org (Postfix) with ESMTPS id F2AE63858428
|  for <cygwin AT cygwin DOT com>; Wed, 15 Oct 2025 22:59:06 +0000 (GMT)

I've no idea what happened here, but am pleased to see my emails finally arrive.

Cheers ... Duncan.

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