On Fri, Mar 5, 2010 at 02:28, Graeme Fowler <gra...@graemef.net> wrote:
> Fresh operational content: one of the reasons services like Spamcop > occasionally list services like Facebook is that they don't honour 5xx > responses to RCPT TO:. I'd offer some statistics but I'm concerned that > the legal brigade will jump down my throat, but I suggest that anyone > running a system like an academic mail platform take a look at the > number of invalid recipients services like Facebook try to deliver. If > they stopped doing that they'd be a long way towards better behaviour, > IMO. > > As long as we're going off-topic, might as well go all the way :V How long should a sender (say, Facebook) retain a database of 5xx SMTP responses? Just because jim...@school.edu doesn't exist today, doesn't mean that James Robert Jones won't enroll in the fall and get jimbob@ as his school-provided email address. David Smith MVN.net
