Q0009
Nigel Metheringham edited this page Nov 29, 2012
·
2 revisions
What does no immediate delivery: too many messages received in one SMTP connection mean?
An SMTP client may send any number of messages down a single SMTP
connection to a server. Initially, an Exim server starts up a delivery
process as soon as a message is received. However, in order not to start
up too many processes when lots of messages are arriving (typically
after a period of downtime), it stops doing immediate delivery after a
certain number of messages have arrived down the same connection. The
threshold is set by smtp_accept_queue_per_connection, and the default
value is 10. On large systems, the value should be increased. If you are
running a dial-in host and expecting to get all your mail down a single
SMTP connection, then you can disable the limit altogether by setting
the value to zero.
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