dick hoogendijk writes:
I used the wrong term, sorry. What I ment was: the main MX server for my
domain had a lot of deferred messages for me. After all things were
repaired at hist side his mailer (postfix) wanted to sent _all_ deferred
messages to me at once. This is and was not accepted by my courier. If
needed I will have to ask my friend his part of the logfile msg his
mailer received from courier (including the total amount of msgs he was
allowed to send)
What I hoped to hear was if this behaviour of not accepting all deferred
msgs at once is something that can be (overruled) by some config file.
Courier's default configuration accepts a maximum of four simultaneous
incoming connections from the same IP address. There is no limit on the
number of messages sent by each connection.
If the remote server tries to open hundreds of simultaneous incoming
connections, it's not going to work.
The maximum number of connections accepted from the same IP address, and the
same /24 netblock, is set in the esmtpd configuration file.