QUOTE (appleschoolsupply @ Oct 31 2009, 05:44 AM)

We have experienced the exact same thing over the past 2 weeks. I spoke with NS support the other day and they told me that my dynamic IP address was the cause. They said it was on the blacklist. they never mentioned they said they changed their filters. Now that I understand what happened, I am certain it's on the NS side and they need to fix it. We are losing business every day and we look ridiculous to our customers because we can't send or receive emails to them.
Can someone from NS Support please comment?
Ok, here's the scoop. I just spoke with a NS tech person (Amy). She said they transferred over to Cloudmark spam filter from symantic and is steadfastly denying that the customer base is suffering because of this. Here's what is happening - your email/domain name may be on one of Cloudmark's blacklists. Your customers' email/domain names may be on a blacklist. If that's the case, neither will be sent or received and you will never receive any notification. There are 2 solutions that we spoke of and only one is worth anything:
1) contact NS support to have them make a request to Cloudmark to take your name off the blacklist. (takes up to 48 hours). If this is successful, it solves the issue around you, but not around the 1,000's of customers who are sending you emails, some of which may be on a blacklist.
2) transfer your email over to another provider. If your domain is hosted with NS, then you apparently have to get the "MX" record from the new mail hosting company and give it to NS. This is supposed to take up to 24 hours.
What gets me so upset is the nonchallent way in which the NS support girl addressed my concern. She really didn't seem to care.