Apache James MTA 3.6.0 spawning additional connections.

Hello,

We are seeing something very strange with Apache James MTA.

Keeping the flow below in context, we have a client which only uses 1 connection ad reuses it send emails to Apache James. We have confirmed this through connection tracking. We are seeing Apache James spawning up to 60 connections.

Flow :
Docker Client ---- ( 1 connection : 60 emails ) ----> Apache James ( MTA ) on Docker ---( spawning 60  new connections ) ->   SMTP Gateway.

Configuration:
I have sent the following to 1 and retested. It still behaves the same way.

MTA_SPOOL_THREADS=1
MTA_DELIVERY_THREADS=1


<!-- Number of spool threads -->

<spooler>

      <threads>${env:MTA_SPOOL_THREADS}</threads>

        <errorRepository>file:///deployments/logs/mail/error/</errorRepository>

</spooler>

<!-- The number of threads that should be trying to deliver outgoing messages -->
<deliveryThreads>${env:MTA_DELIVERY_THREADS}</deliveryThreads>


Objective here is limit the no of connections made to SMTPGateway.

Any guidance ? Amlan


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