[Assp-test] 502 5.5.2 Error: command not recognized

[Renaud <ml...@ma...>]

Please find to this link all relevant infos about my setup:

   - Perl version:
   https://privatebin.sharops.net/?01ff26a1db6b9914#QM8+WuHnia8GwOaepq9RiTl7nNEXeFn4+2B/Eo9w690=
   - ASSP Perl modules:
   https://privatebin.sharops.net/?2edb945b3523f589#gvSg3p4n149TLfLDstYMRL1nVNecde/Ar8zm4QWnApg=
   - ASSP version: ASSP version 2.6.2  *Fortress*  build 18181


*The context*
I've a cluster of 2 ASSP, one master and one slave.
Since 26 juin 2018 I see lot of 502 error received by email (NotifyRe) and
in my logs. Until today lot of these errors were due to the remote party
doing something wrong. Usually an unknown SMTP server.

But today theses errors happen more and more often and happened from Google
servers. My users use my servers as relay in their Gsuite configuration.
So I checked my logs and It's what I discovered:

https://privatebin.sharops.net/?77f60b366ea1755b#S8Wx26N64/fHM8cIkxUMHcGTkQg94lbWDZc9uCy+HfI=

Some of the HTML email have been interpreted as SMTP command...

Because of the grow of my reporting about this issue, I'd like to know if
I'm alone with with the "502 5.5.2 Error" specially with Google and in the
last 30 days ?

Cheers,
Renaud