On 2022-04-20 at 06:51:47 UTC-0400 (Wed, 20 Apr 2022 12:51:47 +0200)
Cyril - ImprovMX via mailop <cy...@improvmx.com>
is rumored to have said:
What happened here ?
Gmail happened. Only Google (maybe) knows what this phenomenon is. Maybe
Brandon Long will speak up here about it, maybe not.
Our logs clearly show that we forwarded the email in under 2 seconds
and we didn't mess with the dates (or anything, for that matter).
Does anyone here experience this before?
Yes. It was completely non-reproducible as far as I could tell when I
tried to analyze it in 2019. Delays of over 10 minutes hit <0.1% of
messages in the flow I was working with.
Do you have any explanations about what happened?
AFAICT, it's random breakage inside Google. My theory is that they have
a failure mode in queueing between external MX nodes and the next
internal hop that can cause very long queues that take hours to clear.
Pure guess. Secondary theory: it's by design: some messy cousin of
greylisting.
I'd love to reach out to Gmail to ask them about this, but, well, it's
Gmail.
Right. Occasionally worth almost what you pay for it, as long as you can
ignore the random breakage, because you don't have the option of getting
anything done about it.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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