webmin@myhostname disapeared

Hi,

Since May 2nd, webmin's from email address (set through Webmin > Webmin Configuration > From address for email from Webmin) wich defaults to webmin@ disparead. I didn't remove it. Did any one experience such a dissapearance ,

I noticed it because I didn't receive Virtualmin scheduled backup notifications anymore. Since the are sent using default webmin's from address, these notifications where rejected by smtp servers (sent from unexistant user).

I'm running Webmin 1.750 and Virtualmin version 4.17.gpl on a Debian powered host.