Mail delays are back: 4 hours
fw at fwright.net
Wed Dec 21 22:29:42 UTC 2022
On Wed, 21 Dec 2022, Matt Selsky via devel wrote:
> This is only a 2 minute delay, if I converted all timestamps to UTC correctly.
My last post was delayed 11 minutes, which is longer than it should be,
but not awful.
> I did find that a spammer was abusing our Mailman instance's web
> interface to send bounces via our gateways. I enabled
> SUBSCRIBE_FORM_SECRET and that seems to have stopped the spammer for
> now. I cleared the deferred mail queues and I'll keep an eye on it.
Gary's post a while back about the humongous queue made me wonder if
there's some misconfiguration where undeliverable messages are never timed
out, leading to an ever-growing queue. I think the typical timeout is
around four days. First-order, this should only cause a disk space issue,
but if the code scales poorly to large queues it could also cause
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