> Some design decisions were right. Some started out right and became wrong as the world changed. Some were dubious and haven't become any less so. Full marks

> Some design decisions were right. Some started out right and became wrong as the world changed. Some were dubious and haven't become any less so. Full marks to anyone who can look back and honestly say as much. I went in skimming to see if there would be discussion of the security and correctness issues that sendmail became unfortunately infamous for, and I really appreciate them being discussed at reasonable length. (And I say that without judgment; I've certainly shipped enough things that lasted long enough for me to realize the errors that I had made in their design and/or implementation.)