b...@theworld.com writes: > The predecessor to sendmail was delivermail, 1979, also written by > Eric Allman. > > https://en.wikipedia.org/wiki/Delivermail
Damn. Now you made me read RFC801 and wonder why we didn't have an updated version for the IPv6 transition. Or: Where would the Internet have been today without that very explicit "complete switch over" goal? Bjørn
