Arnt Gulbrandsen wrote:
http://www.sendmail.org/~ca/email/doc8.12/op-sh-5.html#sh-5.4
talks about 'X' in the same way as I remember.
A vintage 1995 sendmail.cf modified by IBM for OS/2 on my box
has the critical X for all M... except from Mlocal and Mprog.
shall we conclude that it _is_ possible to get this wrong,
Users modifying sendmail.cf manually are doomed, I don't see
how 2821bis could help them. It's an SMTP standard, not a
sendmail manual, the latter used to be a book with more than
700 pages.
and that 2821bis can include an example or other gentle
guidance?
If that's only about old sendmails, it just is _not_ gentle.
What do you have in mind, a note like "test this in a SMTP
session with another MTA" ?
Bye, Frank