Hi,
we have a single lmtp end point which is pointing load balancer .
Lmtp endpoint ---> Load balance --> Dovecot director --> Dovecot backend
If any one of the backend failed we are seeing the delay in lmtp delivery to even the other backend which are healthy. How to solve this issue is this due to lmtp_connection_reuse_time_limit ?
We need to make sure that only the delivery to the failed backend should fail and rest all should work as expected
Pasting the lmtp settings here
lmtp_connect_timeout = 0s
lmtp_connection_cache_time_limit = 2s
lmtp_connection_reuse_time_limit = 300s
lmtp_data_done_timeout = 600s
lmtp_data_init_timeout = 50s
lmtp_data_xfer_timeout = 60s
lmtp_lhlo_timeout = 40s
lmtp_mail_timeout = 40s
lmtp_pix_workaround_delay_time = 10s
lmtp_pix_workaround_threshold_time = 500s
lmtp_quit_timeout = 300s
lmtp_rcpt_timeout = 300s
lmtp_rset_timeout = 20s
lmtp_destination_concurrency_failed_cohort_limit = $default_destination_concurrency_failed_cohort_limit
lmtp_destination_concurrency_limit = 9
lmtp_destination_concurrency_negative_feedback = $default_destination_concurrency_negative_feedback
lmtp_destination_concurrency_positive_feedback = $default_destination_concurrency_positive_feedback
lmtp_initial_destination_concurrency = $initial_destination_concurrency
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