search for: postscreen_upstream_proxy_timeout

...r side of the connection configuration for postfix, here is the relevant information: >> master.cf: smtp inet n - - - 1 postscreen smtpd pass - - - - - smtpd >> main.cf postscreen_upstream_proxy_protocol = haproxy postscreen_upstream_proxy_timeout = 10s That's it. I don't know what other information could be useful. There are some logs, they are like this (I've got logging turned on for pretty much every option I have: Dovecot logs: Apr 19 17:54:47 submission(__EMAIL__)<497><KUGA0OWG8XlfW/Q8>: Debug: Added userdb...

...elining_enable = no postscreen_pipelining_ttl = 30d postscreen_post_queue_limit = $default_process_limit postscreen_pre_queue_limit = $default_process_limit postscreen_reject_footer = $smtpd_reject_footer postscreen_tls_security_level = $smtpd_tls_security_level postscreen_upstream_proxy_protocol = postscreen_upstream_proxy_timeout = 5s postscreen_use_tls = $smtpd_use_tls postscreen_watchdog_timeout = 10s postscreen_whitelist_interfaces = static:all prepend_delivered_header = command, file, forward process_id = 14480 process_id_directory = pid process_name = postconf propagate_unmatched_extensions = canonical, virtual proxy_i...