Keep in mind as others suggest gmail may not work, or gmx, or.... it is not an issue with them. I was able to verify during my painful similar issue that HG refuses to change the email parameters to any new ones entered. So if you do not get them right the very first time on a new install, HG has a heck of time (if ever) changing them again. I found that before, and I find it again today. Also know it is not a mono issue, it is internal HG: designer admited once to us that sometimes HG does not update the email info when changed....