Just an observation, party A's time stamping of outgoing emails is running 1 minute and 12 seconds ahead of the first yahoo node that the mail passes through.
I sent myself an email from my yahoo webmail at 12:48, it has still to appear in my server mailbox at 13:21. If/when it shows I'll check the path for delays........
It begs the question though, why do parties B and C get party A's emails un-delayed while stuff through yahoo to me is slowed by an hour?
Strange.
Rans6......