Hiya, I have a mail server (Qmail) and just tried to install mdadm to monitor the raid arrays via Yum and it tried to install exim. Is this correct? I guess that it is looking for an MTA so why is it not finding Qmail (linked to /usr/lib/sendmail). One possibility is that I used yum to actually uninstall sendmail, but installed qmail from source as it needed patching. Any way out of this apart from installing mdadm from an rpm with no deps/ Rob