J Doe:
> Hi,
>
> 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.
Unfortunately, Postfix documentation can only describe what is
supported. Describing all the things that aren't supported would
not be practical.
> Some Googling of the mail archives showed posts from 2014, while
> another Google showed a reference [2] to Postfix from 2017:
>
> ?IMSVA (SMTP server) uses Postfix as its MTA, which doesn?t
> support CHUNKING?
>
> Given Postfix?s excellent security track record, was this extension
> not implemented due to security concerns or is it obsolete (I
> checked the RFC and didn?t see a notice of being obsolete), and
> Hotmail and Gmail advertise it for legacy support ?
Every (software) feature has a non-zero cost, and resources are
finite.
Wietser
