Question regarding 8BITMIME / BINARYMIME


I have a question regarding 8BITMIME.

I know Postfix supports 8BITMIME and does not support BINARYMIME, but I am wondering why both 8BITMIME and BINARYMIME are ESMTP extensions. It would appear that 8BITMIME solves the same problem as BINARYMIME (allow 8-bit encoding of MIME), so why wasn’t BINARYMIME made obsolete in the RFC’s ?

Also - because 8BITMIME seems to solve the problem without CHUNKING, is that why Postfix supports it over BINARYMIME ?


- J