That is indeed effective but I invaribably end up with user contacts that won't answer DNS but their email has to be let through and reverse DNS turned off. Would be interested in any workarounds short of telling the client to get a different provider :-) -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Steve Snyder Sent: Tuesday, June 28, 2005 7:34 PM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: OT: SPF record with Network Solutions using reverse DNS lookup combined with not accepting relayed mail will kill 90+% of it ******************************************************** This Weeks Sponsor: Lakeside Software SysTrack is the easiest to use, most complete way to monitor system and application performance. SysTrack combines comprehensive monitoring capabilities with hardware/software inventory, change management, user/web auditing, and reporting to create a total management solution. Evaluation at: http://www.LakesideSoftware.com ********************************************************** Now available BriForum-The Video! http://www.brianmadden.com/store/pc/viewPrd.asp?idproduct=1&idaffiliate=3 Useful Thin Client Computing Links are available at: http://thin.net/links.cfm ThinWiki community - Excellent SBC Search Capabilities! http://www.thinwiki.com *********************************************************** For Archives, to Unsubscribe, Subscribe or set Digest or Vacation mode use the below link: http://thin.net/citrixlist.cfm