>It is Google's problem. Because they need to check every time, before sending, >if they >are allowed to send emails. Otherwise they would/could be spamming (depends on >your >favorite definition of spam).
Sort of. This is related to the great DMARC debacle earlier this year, in which Yahoo and AOL took a reasonable anti-phishing tool and repurposed it to sort of close the barn door after each had separate huge thefts of user credentials and address books, with horrible consequences to mailing lists and legitimate third party mailers. For more details, see http://jl.ly/Email/aoldmarc.html R's, John
