Hi all
Our ISP Email IP Adresses and Domains are, once more, being blacklisted @ Abusix because of, I guess, emails sent to Bluewin Spamtraps.
As far as I have figured out, in contact with our customers allegedly sending spam in past cases, those are almost always false positives.
There was exactly one case of a business customer indeed sending multiple emails to one or several such bluewin email addresses and did not correctly process the bounces, but then only his dedicated IP was listed, not our customer email domains. But also then, the bluewin addresses he send his newsletters to, he could prove, belonged to his customers.
In all other cases, customers sent emails to @bluewin.ch email addresses they knew the owner of. There was even one case where the @bluewin.ch email address in question that was a 'spamtrap' belonged to our customer and he just forwarded his email account with us to his own @bluewin account.
It looks like after some 'short' time of inactivity, Swisscom automatically repurposed the bluewin email address of it's customer as 'spamtrap' which of course cause all those issues.
Unfortunately I have not yet found anyone @swisscom able to further dig into why this so often causes our email services to get blacklisted or how to avoid this.
Abusix.com basically refers to Swisscom as they may not disclose any of those spamtraps and have no information how those bluewin addresses became spamtraps.
Can anyone help or knows who @ Swisscom to contact regarding those abusix spamtrap issues?
Mit freundlichen Grüssen
-Benoît Panizzon-