We're having a heck of a time with mailloops from commtouch accounts (all from prontomail hostnames). This has been going on now for about 2-3 weeks that I've noticed, but the problem seems to be escalating for some reason. What I can best gather is that when an account is cancelled, closed or the mailbox is full, prontomail.com returns a bounced message that ends up getting into a loop with our list server because it is returned from an invalid address. (i.e. [EMAIL PROTECTED], [EMAIL PROTECTED] and [EMAIL PROTECTED] are the ones I'm coming across most frequently, but there are others such as [EMAIL PROTECTED]) I've put in blocks against these addresses, but not sure whether or not this is such a good idea. Unfortunately, all my attempts to look at a bounce from their service has failed. (I've tried making up obviously unused email addresses) Putting a block DOES abruptly put an end to the loop, but I'm not sure whether legitimate email ever comes from that address or not. Have any of you had to deal with this as well? If so, what have you done? Any of you try contacting them? Sharon Tucci
