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Postfix only sends 280 emails

November 12, 2014 1.1k views

Hi, I have a SMTP only server for may email marketing system, it is not spam, is for well created mail list for some of our customers. Recently it stop sending lists with 1000 recipients and break the process on 280 - 290 recipients I don't know which is wrong with my postfix config as it have been used for one-two months ago without problem.

Please could you give some light to where to look for and fix this issue?

Here is my altered configs (I listed only what is not default to postfix):

default_process_limit = 100 
smtp_destination_concurrency_limit = 0 
trigger_timeout = 1 
qmgr_message_active_limit = 1000000 
qmgr_message_recipient_limit = 1000000 
hash_queue_names = defer,deferred,incoming,active

smtpd_error_sleep_time = 0

# bouces 
bounce_queue_lifetime = 0 
maximal_queue_lifetime = 0

# Errors 
smtpd_soft_error_limit = 100000
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