Hi Angus, Thank you for reply and usefull information. I'm in the stage of price for customer but if I get my hands into it there sure will be ICS example :)
-- mvg, Wilfried http://www.mestdagh.biz http://www.comfortsoftware.be http://www.expertsoftware.be > -----Oorspronkelijk bericht----- > Van: twsocket-boun...@elists.org [mailto:twsocket-boun...@elists.org] > Namens Angus Robertson - Magenta Systems Ltd > Verzonden: maandag 2 mei 2011 15:39 > Aan: twsocket@elists.org > Onderwerp: Re: [twsocket] SPF records > > > I have to implement SPF record verification. > > It would be useful addition for ICS, particularly for POP3. > > > But where and how can I grab SPF records? > > Using OverbyteIcsDnsQuery with DnsQueryTXT to get DNS text strings. > > Text Query for bbc.co.uk: v=spf1 ip4:212.58.224.0/19 ip4:132.185.0.0/16 > ip4:78.136.53.80/28 ip4:78.136.14.192/27 ip4:78.136.19.8/29 > ip4:89.234.10.72/29 ip4:89.234.53.236 ?all.ns1.rbsov.bbc.co.uk > > Then parse the IP and subnet masks, check the origination IP is listed. > > But many domains don't have spf records, so you may want some fuzzy > logic > to check reverse DNS of the sending server, and see if it matches the > email address, ie my mail comes from mail.magsys.co.uk which is a good > match for my email address. I've been meaning to set-up spf for years, > never got around to it. > > Angus > > -- > To unsubscribe or change your settings for TWSocket mailing list > please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket > Visit our website at http://www.overbyte.be -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
