X-Sender

[alihyazdi]

Why my X-Sender in gmail and yahoo is my bounce address it is not my email server address?

 

[twisted1919]

X-Sender is different than Sender info and in this case, the right thing to put there is the return path if any, otherwise the from address.
Mailwizz does not set the Sender header anymore, it used to do it but because exim was very picky about thism i decided it does not worth the effort.