Compatibility of Submission in 2.3.1

[Stephan Bosch]

Op 6-4-2018 om 12:29 schreef Paul Hecker:
> Hi,
>
> Dovecot 2.3.1 (8e2f634). When using submission one client of mine can 
> not send messages. Directly sending through exim works. Seems that 
> dovecot is too picky or follow the RFC too precise here to be compatible.
>
> Here is the debug log (note the space between “From:" and 
> "<user2 at host.com <mailto:user2 at host.com>>”):
>
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: Received new command: MAIL From: 
> <user at host.com <mailto:user at host.com>>
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: command MAIL; 501 reply: Submitted
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: command MAIL: Ready to reply
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: Trigger output
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: Timeout stop
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: Sending replies
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: command MAIL; 501 reply: Sent: 501 5.5.4 
> Invalid FROM: Missing '<' at beginning of path
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: command MAIL: Destroy
> Apr  6 12:02:08 mail dovecot: submission(user at host.com 
> <mailto:user at host.com>)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: 
> conn 22.73.xx.144:53943 [0]: command MAIL; 501 reply: Destroy
>
> Is there a chance that you will incorporate a fix (be more compatible 
> but less stringent)?

I can make an option for doing that (some sort of workaround setting). I 
am not a great fan of being liberal by default. That way, violations 
like that will never surface. We will discuss this internally..

Regards,

Stephan.