I sent two mails, one right after the other and one got through straight away and the other took ages.
I'd understand it the other way around (spamd) which is what I always thought was the cause (low whitelist timeout). One got received by shear.ucar.edu an hour later than another via a different yahoo ip. Is just an overloaded server likely the cause? or might it have taken an hour to be processed by shear.ucar.edu? I'm guessing it's yahoo because I've seen other replies get in quicker than mine before. Anyone else not on yahoo seen long delays?