Hi. i have 2 mailservers and its loadbalanced by heartbeat, but now when i send from webmail or from the server it self, i get this reply from google. host gmail-smtp-in.l.google.com[220.127.116.11] said: 550-5.7.1 [18.104.22.168 1] Our system has detected an unusual rate of 550-5.7.1 unsolicited mail originating from your IP address. To protect our 550-5.7.1 users from spam, mail sent from your IP address has been blocked. 550-5.7.1 Please visit http://www.google.com/mail/help/bulk_mail.html to review 550 5.7.1 our Bulk Email Senders Guidelines. e15si31419843bka.81 (in reply to end of DATA command)Return-Path: <******@******.se> mail1.****.se is the first and mail2.****.se is the second server. any idea how to fix this problem?