Connection Caching for One Transport

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Connection Caching for One Transport

Greg Sims
> What is the best way to configure for the following message from outlook.com
> in the maillog:
>
>   said: 451 4.7.652 The mail server [<source_server_ip>] has exceeded the
>   maximum number of connections.
>
> Please note the email is being created on a VM with <source_server_ip>.
> The email is then sent to our new mail server via SMTP.  It appears outlook
> is complaining about the number of connections for email coming from the
> source_server_ip -- only one ip address.

I reduced the number of processes available to the outlook transport to 12
in master.cf.  This eliminated the "maximum number of connections" message.

Thank you Wietse and Viktor!  Greg