Several emails started coming back after I did the last update of mailcow, does anyone know how to solve it? Especially from Hotmail.
Follows the return message when I try to send
Why would a mailcow update change your reputation with Microsoft etc.?
The IP is on their blocklist. It is written in the reject message.
Strange that it is not only hotmail, I have another hosting server and some domains for him are refusing too and other domains do not refuse within the mailcow
Perhaps you are blacklisted for sending bulk mail etc.
You need to check the logs for the reasons mail was rejected.
I mean… how could a mailcow update add your IP to the Hotmail blacklist?
This is really strange. I follow the server closely with mailcow and I cannot understand the ip being in the hotmail blocklist. When I check all the main RBL´s my ip is not listed and even the emails are being reject