Hi all, I've a ISPconfig 2.2.40 running well since a long time. One of my customer reports a problem when his Autoresponder is activated. Sometimes the autoresponder message isn't delivered to the person who is mailing him. Example : if firstname.lastname@example.org want to send a mail to my customer email@example.com, the responder doesn't work. firstname.lastname@example.org receives a mail like this : It seems that the Orange server want to verify the sender of the mail, and cannot. I imagine that this is because the X-Postfix-Sender isn't ok. Maybe it expect it to be "email@example.com" instead of "firstname.lastname@example.org" Do you think it is for this reason that it fails? If so, how can I correct "email@example.com" in "firstname.lastname@example.org" ? Thank you for your help.