make sure you're sending mails with the same address you're receiving them on.
That would be it, thanks! I feel pretty silly, I had registered to the mailing list as nicklas_at_ws.se, but my sender is my long adress, nicklas.borjesson_at_ws.se. It did not use to be that way, I forgot that it had changed. I'll change my adress and hope that solves it. Sorry if I bothered you all.
//Nicklas