Hello, One of my Swiss customer is reporting systematic spam filtering with e-mails originating from his server to bluewin customers. I tried to send a request to postmaster@bluewin.ch but no answer yet.

I would like to know why e-mails are filtered (I double-checked SMTP config) so is there someone from the bluewin's postmaster team here ?

Thanks for your answer and sorry for the noise, Julien Escario