text_combined: mike jackson ptyazdyrbarkingdognet heavy issues hotmail since reject legitim messages spam without reason 50 servers worldwide different subnets nearly impossible 50 servers spamed hotmail since servers accept authenticated smtp clients nearly impossible work daily people run servers exactly like yet spam sorts spewing mail queues ones see smtp accounts weak passwords spammers authenticate users bam server spam source hotmail make sure reverse dns record servers sending ip record name resolves ip smtp banner greeting lists name also use spf records use ptr option reject mail domains contain option thu 07 aug 2008 235800 0600 ot yahoo deferred