aviancarrier writes "Verizon DSL has turned on a very aggressive spam filter that is blocking lots of long-time legitimate emails. Emails get bounced with an error: 'XX@verizon.net: host relay.verizon.net[18.104.22.168] said: 550 Email from your Email Service Provider is currently blocked by Verizon Online's anti-spam system. The email "sender" or Email Service Provider may visit http://www.verizon.net/whitelist and request removal of the block.' That whitelist web page lets you request one address at a time to be whitelisted with no guarantee for their response time to process it. I have tested multiple email sources and only one got through. As a VZ customer, I just spent 28 minutes on a call to tech support, eventually got a supervisor who knows nothing about the new spam feature, and would only agree to email a manager who doesn't work weekends about it. I warned her that VZ has a public relations problem but she was too clueless to understand." Many users have submitted this problem so it seems to be a pretty far reaching problem. There is also a discussion going on over at Google about this problem.