On 7/13/2022, Philip Paeps via mailop wrote:
In the past couple of days, I'm seeing an uptick in rejects from Gmail
as follows:
<[elided]@gmail.com>: host
gmail-smtp-in.l.google.com[2607:f8b0:4004:c17::1a] said: 550-5.7.1
[2610:1c1:1:606c::19:2] Our system has detected that this message is
550-5.7.1 not RFC 5322 compliant. To reduce the amount of spam sent to
Gmail, 550-5.7.1 this message has been blocked. Please review 550
5.7.1
RFC 5322 specifications for more information.
bp41-20020a05620a45a900b006a64dbdb75asi7765031qkb.308 - gsmtp (in
reply to
end of DATA command)
Heh, Isn't that neat. Gmail re-queues and re-sends messages if your 5xx
response isn't to their liking. And being worried about their users
_getting_ spam while they seemingly ignore notifications about the spam
their users are _sending_.
SgtChains
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