Nonono Manike, if it were conducted by PM/email, there wouldn't be scope for others to offer opinion/suggestions etc.
then again, who polices the police
My suggestion would be that maybe the aceville.com domain has gotten onto a blacklist with j-lo's email provider (msn.com by the looks of it), hence they're bouncing back straight away, but other ones aren't.
Either that or somebodies got a full email box, but the fact that other emails from different accounts would suggest that this suggestio is less likely.