Hi Team

I was made aware that a Google IP is listed in one of the blacklists we
operate.

Strangely this hinted that Google was attempting to send an email to an
IP address which is running a spamtrap/honeypot and for sure is not
used as MX.

Normally this is only being hit by bots scanning for open relays or
performing dictionary attacks and similar. So no whitelist is being
checked on that honeypot.

Received: from mail-ej1-f49.google.com ([209.85.218.49]:41776) from
******@******.ch Auth:   by a Spamtrap on 157.161.57.6 25
pretending to be an open relay for *****@az-ambachgraben.ch; Wed, 10 Jun
2020 13:04:58 +0200 (CEST)

az-ambachgraben.ch mail is handled by 10 rrmx.imp.ch.

rrmx.imp.ch has address 157.161.12.4
rrmx.imp.ch has address 157.161.12.5
rrmx.imp.ch has address 157.161.12.6
rrmx.imp.ch has IPv6 address 2001:4060:1:1001::12:6
rrmx.imp.ch has IPv6 address 2001:4060:1:1001::12:4
rrmx.imp.ch has IPv6 address 2001:4060:1:1001::12:5

It is an IP Addresses in the same AS, but it looks like google just sent
that email to a completely unrelated IP.

Has anyone else seen this behaviour?

-- 
Mit freundlichen Grüssen

-Benoît Panizzon- @ HomeOffice und normal erreichbar
-- 
I m p r o W a r e   A G    -    Leiter Commerce Kunden
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Zurlindenstrasse 29             Tel  +41 61 826 93 00
CH-4133 Pratteln                Fax  +41 61 826 93 01
Schweiz                         Web  http://www.imp.ch
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