text_combined: aaron kulkis cmiqlkx91hotpopcom joe sloan wrote philipp thomas wrote sat 16 feb 2008 232813 0500 james knott wrote another area windows behind times really ntfs rather fragmentation resistent fat decendants lacks considerably thats said yet see ntfsusing friends weekly defrag one believe experience baghdad last year regular defragging wasnt done night shift course daytime staff would soon start complaining slowness didnt know defragsbut sure know done couple weeks udcatmailabuseorg sun feb 24 103010 2008 message 7 date tue 12 feb 2008 105732 0800 douglas otis subject ietfdkim issue ssp02 mx record publishing mandate reducedns overhead ssp discovery detect fraudulent messages frank ellermann cc gfkyhddlmipassocorg messageid contenttype textplain charsetusascii formatflowed delspyes feb 12 2008 753 frank ellermann wrote douglas otis wrote ssp draft mandate publishing mx records whenever ssp record also published 1 ssp asp business mandate mx records thats job mx records required 2821bis interoperability rfc 2119 clear policy arbitrary mustard must occurs conjunction publishing ssp records mandate publishing mx records ssp used since ssp discovery process makes use mx record queries determine whether domain exists could well use aaaa ns txr rp fwiw etc afaik uses mx might also used ie cached tasks mta agreed however querying mx record wasted transactions find ssp record without mx record importantly result also truncate policy discovery processes improve protections parent domains well disavowing messages truncate number possible signature validation attempts well ssp record returned domain published mx record thereby signals email dkim used email addresses mail authors domain statement mails nonexisting authors always signed suffices reject unsigned mails nonexisting authors domain without users nobrainer unrelated non existence mx records ssp still mandates query parent domain well number queries key records convention becomes widely adopted would allow use records purposes smtp without subsequently causing call back verifications policy key discoveries words lays foundation defend possible abuse domain existing users permitted mail authors removing mx records suffice educate stubborn users still convention offers level protection otherwise lost number transactions added dkim ssp dkim design depend smtp proposal mixes unrelated layers like general mx idea ssp feature agreed stipulation smtp messages disavowed wed 06 aug 2008 130652 0500 opensuse defragging possible necessary