Hello all,
I'm attempting to implement a submission server with questions in regards to how Dovecot handles the backend hosts capabilities. To my understanding, Dovecot will connect to the host specified in either submission_host or submission_relay_host, and gather a list of capabilities. Once gathered, after the client sends the EHLO greeting Dovecot will respond back with capabilities that the backend host is capable of.
My question is, When does this occur? Running a tcpdump with the filter set to the relay host IP, I don't see any traffic until after I send the EHLO command. Dovecot states that CHUNKING is available, but the backend host does not have that capability.
Is there a way to disable CHUNKING explicitly?
Thanks.
submission_relay_host = x.x.x.x submission_host = x.x.x.x submission_relay_ssl = no submission_relay_ssl_verify = no
protocol submission { passdb { driver = static args = host=x.x.x.x proxy=y nopassword=y port=587 } }