> On Mar 1, 2018, at 3:42 PM, J Doe <gene...@nativemethods.com> wrote: > > I have been reading about the ESMTP CHUNKING extension (RFC 3030), after > noticing that both Hotmail and Gmail advertise it on EHLO. > > I checked the Postfix man pages (man 5 postconf), as well as the Postfix > documentation at postfix.org [1] and can’t see any documentation related to > it.
There is little need for CHUNKING. It is unnecessary complexity for rather modest data compression (avoiding base64 encoding when the message originates from an MUA that supports BINARYMIME and CHUNKING and the same is true of every MTA along the path). Exim implemented chunking and had a long string of bugs until they ironed out all the issues. In Postfix my sense is that it is not a worthwhile feature. -- Viktor.