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 "mailto:user2@host.com>”):

Apr  6 12:02:08 mail dovecot: submission(user@host.com mailto:user@host.com)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: conn 22.73.xx.144:53943 [0]: Received new command: MAIL From: mailto:user@host.com> Apr  6 12:02:08 mail dovecot: submission(user@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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)?

Any idea which client is doing that?

Regards,

Stephan.

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 "mailto:user2@host.com>”):

Apr  6 12:02:08 mail dovecot: submission(user@host.com mailto:user@host.com)<14972><ko4tJitpt9JYSSSC>: Debug: smtp-server: conn 22.73.xx.144:53943 [0]: Received new command: MAIL From: mailto:user@host.com> Apr  6 12:02:08 mail dovecot: submission(user@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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@host.com mailto:user@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.