I am using Bluehost.com and I keep getting this message when I reply to craigslist ads: <[email protected] 184.108.40.206 does not like recipient. Remote host said: 554 <unknown[220.127.116.11]>: Client host rejected: rDNS/DNS validation failed. Please setup matching DNS and rDNS records: http://bind8nt.meiway.com/itsaDNSmess.cfm Giving up on 18.104.22.168. Does anyone know how to fix this issue??? Your help would be much appreciated!!!